Factorise:. X^2+30X-216
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Answer:
(x + 36)(x - 6)
Step-by-step explanation:
30 = 36 - 6 , so let split the middle coefficient
x² + 36x - 6x - 216 =
x(x + 36) - 6(x + 36) = (x + 36)(x - 6)
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