Question

b) Factorise
Factorise y2 + 2y - 24
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Answer 1

Answer:

(y + 6)(y - 4)

Step-by-step explanation:

Factor the following:

$\longrightarrow$ y² + 2y - 24

The factors of -24 that sum to 2 are 6 and -4.

So,

$\longrightarrow$ y² + (6 - 4)y -24

$\longrightarrow$ y² + 6y - 4y - 24

$\longrightarrow$ y(y + 6) - 4(y + 6)

$\longrightarrow$ (y + 6)(y - 4)

Answer 2

Answer:

( y-4) ( y+6)

Step-by-step explanation:

= y^2 + ( 6 - 4)y - 24

= y^2 + 6y - 4y - 24

= y( y + 6) - 4(y + 6)

= ( y - 4 ) ( y + 6)