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zeroone01
@zeroone01
July 2022
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Помогите ! ( 2х + 1)^2 - 49 = ... нужно решить , и полностью всё расписать .
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sangers1959
Verified answer
(2x+1)²-49=(2x+1)²-7²=(2x+1+7)(2x+1-7)=(2x+8)(2x-6)=4x²+4x-48=
=4*(x²+x-12)=4*(x-3)(x+4).
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Answers & Comments
Verified answer
(2x+1)²-49=(2x+1)²-7²=(2x+1+7)(2x+1-7)=(2x+8)(2x-6)=4x²+4x-48==4*(x²+x-12)=4*(x-3)(x+4).