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Z^2-3z-54 for factorisation for grade 8.
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Z^2-3z-54 for factorisation for grade 8.

User Mottaz Hejaze
by
5.4k points

1 Answer

6 votes

Answer:

(z - 9)(z + 6)

Explanation:

Given

z² - 3z - 54

Consider the factors of the constant term (- 54) which sum to give the coefficient of the z- term (- 3)

The factors are - 9 and + 6, since

- 9 × 6 = - 54 and - 9 + 6 = - 3 , thus

z² - 3z - 54 = (z - 9)(z + 6)

User Abraham Labkovsky
by
5.6k points
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