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пилуцый
@пилуцый
July 2022
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Разложить на множители
а) (3a-2b)^2-(3a-5b)^2
б) x^3+3x^2-4x-12
в) a^2-2ax+x^2-b^2
г) 0,125x^3-8
^ - степень
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ВикаВикторовна
Verified answer
А) (3a-2b)²-(3a-5b)² = ((3a-2b)-(3a-5b))((3a-2b)+(3a-5b)) = (3a-2b-3a+5b)(3a-2b+3a-5b) = 3b(6a-7b)
б) х³+3х²-4х-12 = х²(х+3)-4(х+3) = (х+3)(х²-4) = (х+3)(х-2)(х+2)
в) а²-2ах+х²-b² = (a-x)²-b² = (a-x-b)(a-x+b)
г) 0,125х³-8 = (0,5х)³-2³ = (0,5х-2)(0,25х²+х+4)
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пилуцый
Спасибо огромное!
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Answers & Comments
Verified answer
А) (3a-2b)²-(3a-5b)² = ((3a-2b)-(3a-5b))((3a-2b)+(3a-5b)) = (3a-2b-3a+5b)(3a-2b+3a-5b) = 3b(6a-7b)б) х³+3х²-4х-12 = х²(х+3)-4(х+3) = (х+3)(х²-4) = (х+3)(х-2)(х+2)
в) а²-2ах+х²-b² = (a-x)²-b² = (a-x-b)(a-x+b)
г) 0,125х³-8 = (0,5х)³-2³ = (0,5х-2)(0,25х²+х+4)