помогите решить плиз! 20 баллов! а) (3х^3)^4 умн. (4х^5)^3=-72^2 б) (8х^5)^2 умн. (1/5х^4)^3=(4/5)^3. Created by hunteryonok. algebra-ru

A) (3x³)⁴(4x⁵)³=-72²4⁴x¹²*4³x¹⁵=72²4⁷x²⁷=(4*2*9)²4⁷x²⁷=4²*4*9²б) (8x⁵)²(1/5 x⁴)³=(4/5)³8²x¹⁰*1/5³ * x¹²=4³/5³8²x²²=4³(2*4)²x²²=4³4*4²x²²=4³x²²=1x=+-1

5)^3...

hunteryonok @hunteryonok

August 2022 1 9 Report

помогите решить плиз! 20 баллов!
а) (3х^3)^4 умн. (4х^5)^3=-72^2

б) (8х^5)^2 умн. (1/5х^4)^3=(4/5)^3

Answers & Comments

kmike21

Verified answer

A) (3x³)⁴(4x⁵)³=-72²
4⁴x¹²*4³x¹⁵=72²
4⁷x²⁷=(4*2*9)²
4⁷x²⁷=4²*4*9²
$x= \sqrt[27]{ \frac{9^2}{4^4} } =\sqrt[27]{ \frac{81}{256} }$

б) (8x⁵)²(1/5 x⁴)³=(4/5)³
8²x¹⁰*1/5³ * x¹²=4³/5³
8²x²²=4³
(2*4)²x²²=4³
4*4²x²²=4³
x²²=1
x=+-1

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