SOLUTION: 1. Factor out the GCF: {{{4x^2+36y^2}}} = is my answer correct cane some one please check for me {{{2^2x^2+2^2*3^2y^2}}} 4(x^2+9y^2) 2. Factor by grouping: 3x^2-12x+5x-

Algebra ->  Graphs -> SOLUTION: 1. Factor out the GCF: {{{4x^2+36y^2}}} = is my answer correct cane some one please check for me {{{2^2x^2+2^2*3^2y^2}}} 4(x^2+9y^2) 2. Factor by grouping: 3x^2-12x+5x-      Log On


   

Question 75789: 1. Factor out the GCF: 4x%5E2%2B36y%5E2 = is my answer correct cane some one please check for me 2%5E2x%5E2%2B2%5E2%2A3%5E2y%5E2
4(x^2+9y^2)

2. Factor by grouping: 3x^2-12x+5x-20
(x-4) (3x+5) please see if my answer is correct when it say grouping what should i do .
thanks
Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!

1. Factor out the GCF:
4x%5E2%2B36y%5E2 = is my answer correct 
can someone please check for me 2%5E2x%5E2%2B2%5E2%2A3%5E2%2Ay%5E2 
4%28x%5E2%2B9y%5E2%29

Yes that's correct 


2. Factor by grouping: 3x%5E2-12x%2B5x-20
%28x-4%29%283x%2B5%29 please see if my answer is correct 
when it say grouping what should i do .

You got the correct answer by inspection of the FOIL
method but you skipped the intermediate steps, which
makes the process easier:

3x² - 12x + 5x - 20

Factor 3x out of the first two terms 

3x(x - 4) + 5x - 20

Factor 5 out of the last two terms

3x(x - 4) + 5(x - 4)

I'll do some coloring:

3x(x - 4) + 5(x - 4)

Factor the red (x - 4) out leaving
the sum of the green factors in 
parentheses

(x - 4)(3x + 5)

Edwin