Question

${(a - b)}^{2} + {(a - b)}^{2}$
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Answer 1

Answer:

2a²-4ab+2b²

Step-by-step explanation:

(a-b)²+(a-b)²

=2[(a-b)²]

=2[(a²-2ab+b²)]

=2a²-4ab+2b²

Answer 2

Answer:

(a - b)² + ( a- b)²

= a² + b² -2ab + a² + b² -2ab

= 2a² + 2b² - 4ab

= 2( a² + b² -2ab)