COMPLETELY FACTOR THE FOLLOWING EXPRESSIONS

Question

1. 15x^2 - 16x- 15
2. 9gh + 49 - 9h^2 - 9gh
3. 6k^2 + 5k-21
4. y^3 - 2y^2 + 6y - 12

Answer 1

1)

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

2) the 9gh cancels

49 - 9h^2 = ( 7 + 3h )( 7 - 3h )

3)

( 3k + 7 ) ( 2k - 3 )

4)

y^2( y-2) + 6(y-2)

(y^2 + 6)(y-2)