Question

Factorise the Algebraic Expression.

30-17(x-y)-21(x-y)²​

Answer 1

Let's simplify step-by-step.

30−17(x−y)−21

${x - y}^{2}$

Distribute:

=30+(−17)(x)+(−17)(−y)+−21x2+42xy+−21y2

=30+−17x+17y+−

${21x}^{2}$

+42xy+−

${21}^{2}$

Answer:

=−21

${x}^{2}$

+42xy−21

${y}^{2}$

−17x+17y+30