Question

expand (a-b)² in
maths​

Answer 1

Answer:

a²-2ab+b²

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Answer 2

Answer:

$(a-b)^2=a^2+b^2-2ab$

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$(a+b)^2=a^2+b^2+2ab\\(a+b)(a-b)=a^2-b^2\\(x+a)(x+b)=x(a+b)x+ab$