factonise
(a+b)" - (a - b) 4
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Step-by-step explanation:
(a+b) -(a-b) 4
a+b-4a-4b
a-4a+b-4b
a(1-4)+b(1-4)
(a+b) (1-4)
(a+b) -3
I hope it helps you
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