пожалуйста, решите! последние два примера!. Created by Vaivin. algebra-ru

пожалуйста, решите! последние два примера!...

August 2021 1 9 Report

пожалуйста, решите! последние два примера!

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litanalove (4(x-2)²+5(x-4)² -(3x-8)²) /20 = 0
4(x²-4x+4) +5(x²-8x+16) -
(9x²-48x+64)=0
4x²-16x+16+5x²-40x+80 - 9x²+48x-64=0
-8x+32=0
-8x= -32
x=4

(3x-2)²+(4x-1)²=(5x-3)²+8x
9x²-12x+4+16x²-8x+1 =
=25x²-30x+9+8x
25x²-20x+5-25x²+22x-9=0
2x-4=0
2x=4
x=2

2 votes Thanks 1

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Answers & Comments

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