Question

7. 15y2 + 16y + 4 factorise it​

Answer 1

Answer:

$15 {y}^{2} + 16y + 4 \\ = 15 {y}^{2} + 10y + 6y +4 \\ = 5y(3y + 2) + 2(3y + 2)$

$= (3y + 2)(5y + 2)$

if 3y+2 =0

y = -2/3

if 5y+2 = 0

y = -2/5

y = -2/3 or -2/5