SOLUTION: university of phoenix elementary and intermediate algebra factor each trinominal by using the ac method 15x2

SOLUTION: university of phoenix elementary and intermediate algebra factor each trinominal by using the ac method 15x2 - 7x -2

Question 94592: university of phoenix elementary and intermediate algebra factor each trinominal by using the ac method 15x2 - 7x -2
Answer by tutorcecilia(2152) (Show Source): You can put this solution on YOUR website!
15x2 - 7x -2
[split the middle or "c" term into two terms]
.
Technique for finding the middle or "c" term:
Factor 15x^2: (3x)(5x)
Factor 2: (-2)(1)
Look for combinations amongst the factors that will add up to (-7)
The combination will be (5x)(-2)+(3x)(1)= -10x+3x=-7x
.
Re-write the expression:
15x^2-10x+3x-2
.
15x^2-10x+3x-2 [factoring using the grouping method]
15x^2+3x-10x-2 [obtained through trial-and-error]
3x(5x+1)-2x(5x+1)
(3x-2x)(5x+1)

RELATED QUESTIONS
university of phoenix elementary and intermediate algebra factor each trinominal using... (answered by stanbon)

university of phoenix elementary and intermediate algebra U3- 125V3 factor each... (answered by stanbon,tutorcecilia)

factor each polynomials university of phoenix elementary and intermediate algebra A2 -2a- (answered by checkley75)

factor each polynomials university of phoenix elementary and intermediate algebra... (answered by checkley75)

university of phoenix elementary and intermediate algebra factor each polynominal... (answered by stanbon)

university of phoenix elementary and intermediate algebra factor complete the polynomial... (answered by Edwin McCravy)

university of phoenix elementary and intermediate algebra factor complete the polynomial... (answered by checkley75)

find each product university of phoenix elementary and intermediate algebra (3ypower2 +... (answered by bucky)

find each product (3y2 + 1)(3y2-1) the university of phoenix elementary and intermediate... (answered by checkley75)