Question

15(y+3)(y2 – 16) by (3y2 – 3y – 36)

Answer 1

Answer:

15(y + 3)(y? 16)

5(y2 – y – 12)

To find, the factorisation of 15(y + 3)(y? – 16)

5(y? – y – 12)

15(y + 3)(y? – 16)

5(y? – y – 12) -

5(y + 3)(y? 42) - (y? – 4y + 3y - 12)

5(y + 3)(y + 4)(y 4) - (y + 3)(y 4)

["a? 6? = (a + b)(a b) -

= 3(y + 4)

Hence, the factorisation of 15(y + 3)(y2 – 16) 5(y2 – y – 12) is 3(y + 4).