Question

Divide 15(y+3) (y2-16) by 5(y2-y-12)

Answer 1

5× 3 (y + 3 ) ( y2 - 16 ) / 5 ( y2 - y - 12)

3 ( y3 - 16y + 3 y2 - 48 / y2 - y - 12

9y3 - 48y - 9y2 - 48 / y2 - y - 12

after dividing the Dividend will be 9y3 - 9y2 - 48y -48

divisor = y2 - y - 12

quotient = 9y and the remainder will be 60y - 48

now;

60y - 48 =0

12 ( 5y - 4 ) = 0

y = 4/5