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 ->
Expressions-with-variables
-> 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
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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?
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
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Cheers,
Stan H.
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