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March 30, 2015

Posted by **Mickey** on Sunday, May 16, 2010 at 10:02am.

Height?

Base?

2. Factor

X(2)-7x

3.Factor

5a(6)-1080a(3)

4. Find the GCF

5x(9),5x,-20=

For this one I think the gcf is 5 Is this correct?

5. Factor by grouping

8x(3)-*x(2)-x+1=

- math -
**Reiny**, Sunday, May 16, 2010 at 11:03am1. height -- x

base -- x+5

solve (1/2)x(x+5) = 33

(you will end up with a quadratic which factors very easily)

2. Do you mean x^2 - 7x ??

then x(x-7)

3. do you mean 5a^6 - 1080a^3 ??

I see a common factor of 5a^3

4. yes

5. retype the question, don't know what the -* is supposed to mean. Also use 8x^3 for "8 x cubed"

- math -
**PsyDAG**, Sunday, May 16, 2010 at 11:09am1. B = H + 5

Area = 1/2 BH

Substitute H + 5 for B in the second equation and solve for H. Put that value in the first equation to find B. Check by putting both values into the second equation.

2. X^2 = X squared online

X^2 + 7X = X(X + 7)

I will let you do 3 using the same process.

4 is correct.

5. I'm not sure what this formula is.

8X^3 - X^2 - X + 1 (?)

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