Question

2(a-b)^2-(a-2b)(a+2b) ПОМОГИТЕ ПОЖАЛУЙСТА!заранее спасибо

Answer 1

Вот ответ: a^2-4ab+6b^2

Answer 2

To simplify the expression 2(a-b)^2-(a-2b)(a+2b), we can expand the square term and then multiply out the two factors in the second term using the FOIL method:

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2(a-b)^2 - (a-2b)(a+2b)
= 2(a^2 - 2ab + b^2) - (a^2 - 4b^2)
= 2a^2 - 4ab + 2b^2 - a^2 + 4b^2
= a^2 - 4ab + 6b^2

Therefore, 2(a-b)^2-(a-2b)(a+2b) simplifies to a^2 - 4ab + 6b^2.