(a-b)^ 2 is equal to - Vidyadip

MCQ

$(a-b)^{2}$ is equal to

✓
$a^{2}+b^{2}-2 a b$
B
$a^{2}+b^{2}+2 a b$
C
$a^{2}+b^{2}$
D
$2 a b$

✓

Answer

Correct option: A.

$a^{2}+b^{2}-2 a b$

a
$(a-b)^{2}=a^{2}+b^{2}-2 a b$

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