Question

factorise (middle term splitting) a) x²+17x+30 b) y²+15y+56​

Answer 1

Answer:

b) y2+15+56

Step-by-step explanation:

y2+8y+7y+56

y(2+8)+8(2+8)

(y+8)(10)

(y+8) (y+7)

Answer 2

Answer:

a) x^2 + 17x + 30

x^2 + 15x + 2x + 30

x(x+15) 2(x+15)

(x+15) (x+2)

so, x = -15,-2

b) y^2 + 15y + 56

y^2 + 8y + 7y + 56

y(y+8) 7(y+8)

(y+7) (y+8)

so, y = -7,-8