Thursday

July 24, 2014

July 24, 2014

Posted by **STACEY** on Saturday, June 13, 2009 at 8:16pm.

1) 2ax+3ay-2bx-3by

2)5x^2-20

3)3x^2+4x-15 is the ans to this one = 7x^3-15

- mathematics -
**Damon**, Saturday, June 13, 2009 at 8:33pmYou mean factor

a(2x+3y)-b(2x+3y)

= (a-b)(2x+3y)

5(x^2-4)

= 5 (x-2)(x+2)

(3x-5)(x+3)

- mathematics -
**Reiny**, Saturday, June 13, 2009 at 8:34pmfirst one is "grouping"

2ax+3ay-2bx-3by

= a(2x+3y) - b(2x+3y)

= (2x+3y)(a-b)

second, common factor then difference of squares

5x^2-20

= 5(x^2 - 4)

= 5(x+2)(x-2)

third, general quadratic

3x^2+4x-15

= (3x-5)(x+3)

looks like you got your answer by

adding 3x^2 + 4x to get 7x^3

that is just unforgivable!

**Related Questions**

algebra - 2ax+6bx+ay+3by-az-3bz

algebra - If (2x + y) is one factor of 2ax - 2bx + ay - by, what is the other ...

math - Factor the following. You will earn 5 points for each polynomial that is ...

Math - For how many ordered triples of positive real numbers (a,b,c), do the ...

Math - For how many ordered triples of positive real numbers (a,b,c), do the ...

Mathematics - Hi Just wandering When I factorise the following : 4s-16t+20r It ...

Math for Trish To Help Me With - Factor the following. You will earn 5 points ...

mathematics - 2 2/3 + 1 1/5 / 6 2/5 giviing your ans as a common fraction. Is ...

6th grade math - Can you check these problems, please? Translate each phrase ...

Algebra - Is this right? Decompose into partial fractions. (2x^2-24x+35)/(x^2+2x...