1.

Factorise the followinga. a² + 7a - 144​

Answer»

ong>Step-by-step EXPLANATION:

a^2 + 7a - 144

a^2 -9A + 16A - 144 =0

a ( a - 9) + 16( a -9)

a + 16 = 0

a = -16

a = 9



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