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iavrentevaok
@iavrentevaok
July 2022
1
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Упростите выражения:
1) (а-3b)(а+3b)-(а-3b)(во второй степени)
2)4х(в третей степени)*(-2х во второй степени)в третей степени
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zhenyaM2002
Verified answer
(а-3b)(a+3b) - (a-3b)²= a² -9b² - (a²-6b+9b²)=
= a²-9b²-a²+6b-9b²= -18b²+6b = 6b(1-3b)
4x³ × (-2x²) ³ = 4x³ ×(-8x⁶) = -32x⁹
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Answers & Comments
Verified answer
(а-3b)(a+3b) - (a-3b)²= a² -9b² - (a²-6b+9b²)== a²-9b²-a²+6b-9b²= -18b²+6b = 6b(1-3b)
4x³ × (-2x²) ³ = 4x³ ×(-8x⁶) = -32x⁹