Question

(a-b)²=?
plese solve step by step
I have doubt like
is it a²-b²+2ab
or
a²-2ab+b²
I think second one is correct
my father says first one is correct​

Answer 1

(a-b)^2 =

a^2+b^2-2ab

Answer 2

Question:-

Solve the identity :- (a-b)²

Solution:-

(a-b)²

= a²+(-b)²+(2 × a × (-b)

= a²+b²-2ab

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