Question

Factorise : y(y– 3) – 54
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Answer 1

Answer:

$y(y - 3) - 54 \\ \\ = {y}^{2} - 3y - 54 \\ \\ = {y}^{2} - (9 - 6)y - 54 \\ \\ = {y}^{2} - 9y + 6y - 54 \\ \\ = y(y - 9) + 6(y - 9) \\ \\ = (y - 9)(y + 6) \\ \\ either \: y - 9 = 0 \\ \\ = > y = 9 \\ \\ or \: y + 6 = 0 \\ \\ = > y = - 6$

hope it helps uH :)

Answer 2

Step-by-step explanation:

y^2-3y-54

y^2-y-2y-54

y(y-1)-2(y+27)