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ClanG
@ClanG
July 2022
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Помогите с алгеброй !!!!!
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altowa1
1. а ) =16а^424аb+9b^2
б) = 8а^3+9b^3
2. a) = (4b^2-5a)(4b^2+5a)
б) = -(2x^2-2)^2
3.
(3x-2)^2=(2x+1)(2x-1)+5x^2-7
9x^2-12x+4=4x^2-1+5x^2-7
9x^2-12x+4=9x^2-8
9x^2-12x-9x^2=-8-4
-12x=-12
x=-12/-12
x=1
1 votes
Thanks 1
altowa1
x^2-это х в квадрате значит
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Answers & Comments
б) = 8а^3+9b^3
2. a) = (4b^2-5a)(4b^2+5a)
б) = -(2x^2-2)^2
3.
(3x-2)^2=(2x+1)(2x-1)+5x^2-7
9x^2-12x+4=4x^2-1+5x^2-7
9x^2-12x+4=9x^2-8
9x^2-12x-9x^2=-8-4
-12x=-12
x=-12/-12
x=1