a) [a+b]^2=a^2+2ab+b^2. b)[a-b]^2=a^2-2ab+b^2
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Answer:
Here is my answer>> (a-b)^2=a^2+b^2-2ab (a-b)^2 can be written as (a-b)(a-b) Now let's solve (a-b)(a-b) This will be a×a-a×b-b×a-b×-b
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Step-by-step explanation:
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a) [a+b]^2=a^2+2ab+b^2.
(a+b)²
=(a+b)(a+b)
=(a+b)(a)+(a+b)(b)
=a²+ab+ab+b²
=a²+2ab+b²