Multiply
(8x+3)(4x^2+8x+9)
these ones arent as important, i just want to check my answer against them because theres a lot of little math involved and sometimes i make a small error which gets me the wrong answer
so…
Evaluate the polynominal for x = -2
-5x^3 +7x^2 -7x -2
simplify
{(8m^2+2m-7)-(5m^2-4m+5)} - (m^2+m+4)
^these are simple as far as the concept but its the extra steps that screw me up =/
thanks in advance to anyone who helps out.
Order of operations. That sucks.
Please excuse my dear aunt sally.
Parentheses
Exponent
Multiply
Divide
add
subtract
Not sure if that helps you any…
I think you are missing an exponent in the first problem so I will skip it.
The second problem, I got 80.
The third problem, I got (2m^2-3m-16)
The hardest part is keeping the signs straight. if you have (-4)-(2), you can change the middle sign for this operaton to a + and change the 2 to a -2 so it would look like (-4)+(-2) which would =-6
for (1) i got 70
-5(-2)^3 +7(-2)^2 -7(-2)-2
-5(-8) +7(4) +14-2
40 +28 12
68 + 12 = 70 <----
for (2) i got 2m^2 +5m -16
part 1 = (3m^2 +6m -12) - (m^2+m+4)
2m^2 +5m -16
theres nothing wrong with the first problem either, thats how it looks number for number on my screen.
i dont even know how to start it.
[quote]LiveFromThe781 wrote:
for (1) i got 70
-5(-2)^3 +7(-2)^2 -7(-2)-2
-5(-8) +7(4) +14-2
40 +28 12
68 + 12 = 70 <----
[/quote]
68+12 = 80
This post was wrong. I fail.
(8x+3)(4x^2+8x+9)
= 8x(4x^2+8x+9) + 3(4x^2+8x+9)
[quote]Backlash79 wrote:
LiveFromThe781 wrote:
for (1) i got 70
-5(-2)^3 +7(-2)^2 -7(-2)-2
-5(-8) +7(4) +14-2
40 +28 12
68 + 12 = 70 <----
68+12 = 80
[/quote]
lmao
how am i supposed to do algebra when i cant even add?
[quote]LiveFromThe781 wrote:
for (2) i got 2m^2 +5m -16
part 1 = (3m^2 +6m -12) - (m^2+m+4)[/quote]
I messed up once with the m’s, sorry.
I checked my answer and YOU were right on this one.
(3m^2+5m-16)
Damn common mistakes!
[quote]Backlash79 wrote:
(8x+3)(4x^2+8x+9)
= 8x(4x^2+8x+9) + 3(4x^2+8x+9)
[/quote]
Nice. I guess I was wrong here too.
[quote]Backlash79 wrote:
(8x+3)(4x^2+8x+9)
= 8x(4x^2+8x+9) + 3(4x^2+8x+9)
[/quote]
wrong
its 32x^3+76^2+96x+27
fuck.
i got 3 wrong on that quiz. fuck i have to do it again. =(
if i get a 100 on it, ill hit my 70% avg for online quiz scores which we need in conjuction with a 70 on the final, 70 on homework in order to pass. and i think he drops the lowest online and in-class quiz grade, at least i hope so.
so ill do this shit again in school with my tutor.
[quote]elano wrote:
Backlash79 wrote:
(8x+3)(4x^2+8x+9)
= 8x(4x^2+8x+9) + 3(4x^2+8x+9)
Nice. I guess I was wrong here too.[/quote]
both ya’s
[quote]LiveFromThe781 wrote:
elano wrote:
Backlash79 wrote:
(8x+3)(4x^2+8x+9)
= 8x(4x^2+8x+9) + 3(4x^2+8x+9)
Nice. I guess I was wrong here too.
both ya’s[/quote]
You said you didn’t know where to begin so I was just putting in a beginning.
I feel the need to point out that this is a bodybuilding forum. If you’re adding numbers higher than 15, or multiplying by numbers that aren’t 45, you shouldn’t be doing the math.
That is all.
Which math class is this for?
I passed all my algebras, geometry, 3 calc classes and differential equations. I’m done.
pulling all nighters for all my college math finals somehow allowed me to smoke the finals. i just don’t get it. 30min of sleep after 14hrs of studying and i get an 89 on the final?
no more.
good luck with the math. in the real world they let us use calculators and other people. aka asians.
[quote]Otep wrote:
I feel the need to point out that this is a bodybuilding forum. If you’re adding numbers higher than 15, or multiplying by numbers that aren’t 45, you shouldn’t be doing the math.
That is all.[/quote]
LMFAO!
After reading this thread, my head just exploded. I hated math when I was 13, and I hate math now at 21.
I’ll stick to History, thx
[quote]B rocK wrote:
good luck with the math. in the real world they let us use calculators and other people. aka asians.[/quote]
hilarious.
[quote]LiveFromThe781 wrote:
Multiply
(8x+3)(4x^2+8x+9)
[/quote]
Voila!
Wash, rinse, repeat.