SOLUTION: factor: (2x+5)^2-(2x+5)-12
I used the substitution method:
let u=2x+5
u^2-u-12
(u-4)(u+3)
{(2x+5)-4}{2x+5)+3}
(2x+5-4)(2x+5+3)
(2x+1)(2x+8)
2(2x+1)(x+4)
Is this co
Algebra.Com
Question 102425: factor: (2x+5)^2-(2x+5)-12
I used the substitution method:
let u=2x+5
u^2-u-12
(u-4)(u+3)
{(2x+5)-4}{2x+5)+3}
(2x+5-4)(2x+5+3)
(2x+1)(2x+8)
2(2x+1)(x+4)
Is this correct?
Found 2 solutions by stanbon, edjones:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
factor: (2x+5)^2-(2x+5)-12
I used the substitution method:
let u=2x+5
u^2-u-12
(u-4)(u+3)
{(2x+5)-4}{2x+5)+3}
(2x+5-4)(2x+5+3)
(2x+1)(2x+8)
2(2x+1)(x+4)
Correct
===============
Cheers,
Stan H.
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
yes
Very good!
Ed
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