math

factorize the following expressions and if possible show your steps

4x+20

3y^2+12y

x^2+4y-21

1. 👍 0
2. 👎 1
3. 👁 68
1. #1, common factor is 4
so ....
#2, common factor is 3y
so ....

#3, a trinomial, you will need two number that
have a sum of 4 and a product of -21

1. 👍 0
2. 👎 0
posted by Reiny

Similar Questions

1. Math 12 - Review - Factoring

Can someone show me the steps to do this question: 6x(r+s) - 12y(r+s) Answer: 6(r+s)(x-2y)

asked by ... on September 5, 2007
2. college algebra

12x+4y+2z=-7 (1) 3x-12y+6z=-4 (2) 9x-16y+4z=-3 (3) solve the system. show steps and answers i tried this problem really difficult

asked by ann :) on September 13, 2012
3. Algebra

Can someone show me step by step how to do this problem to have an example to go by so I will be able to do my other problems. Thanks Solve by substitution 4x-12y=5 -x+3y=-1 I know that you have solve one of the equations. I have

asked by jessica on May 6, 2007
4. Math

Factorize these expressions using quadratic trinomials P²+22p+96,x²+18x-63

asked by Abygail on May 1, 2017
5. MATH!

5x^2-7xy+12y^2 _______________(OVER) x^2+xy-20y^2 Please if anyone can help in the steps to answer this...i would be greatful.=) What is a reflex angle Are you sure you copied the question correctly? If the top is 5x^2-17xy-12y^2

asked by megan on March 26, 2007
6. Math

Factorize the following expressions completely. 6x2y3 +18xy + 3x2y2 + 9x y2 – x2 + 8y + 16 64x6 – y6

asked by Joan on March 4, 2008
7. math 012

will someone please double check my answer to this problem. the answer i get is a fraction, but not sure how to type it on here. 4(4y+2)=2(1+6y)+8 16y+8=2+12y+8 16y+8=10+12y -16 -16 8=-6+12y +6 +6 14=12y divide both by 12 and that

asked by amy on February 1, 2009
8. Math

Correct the error in this equation: 6(2y+6)=4(9+3y) 12y+36=36+12y 12y=12y 0=0 y=0

asked by Roger on October 7, 2010
9. Algebra

Rational Expressions 1-x^2/x Second expression 2b-2/2b^2-8 please show steps

asked by tbell on June 19, 2014
10. Algebra

Find the domains of rational expressions 2b-2/2b^2-8 please show steps

asked by michi on June 19, 2014
11. Algebra

To those who know how to use a ti84 plus calculator. Can anyone show me the steps on how to perform rational expressions and equations?

asked by Christopher on April 14, 2014

More Similar Questions