Question

17. 4a2 - 12a - 216 factories by using splitting the middle term formula​

Answer 1

$4a^2-12a-216=0\\4(a^2-3a-54)=0\\a^2-3a-54=0\\a^2+6a-9a-54=0\\a(a+6)-9(a+6)=0\\(a-9)(a+6)=0\\a=9\\or \\a=-6$

Answer 2

Answer:

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Step-by-step explanation:

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