Question

I An Not Able To Solve This Question.
Chapter-Factorisation
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Answer 1

Answer:

(z+9)(z-6)

Step-by-step explanation:

z² -3z -54

By splitting the middle term:-

1 × (-54) =-54

54 into factors

(-1) × 54 or 1 × (-54)

(-2) × 27 or 2 × (-27)

(-3) × 18 or 3 × (-18)

(-6)× 9 or 6 × (-9)

Because (-6)×9= 54 and -6+9=-3

Ans:-

=z²-3z-54

=z²-6z+9z-54

=z(z-6)+9(z-6)

=(z+9)(z-6)