X^2-6x-1 = 0 x^2-x = x+2 Найдите значение x, при котором равенство будет верным ...

June 2022 1 5 Report

X^2-6x-1 = 0
x^2-x = x+2
Найдите значение x, при котором равенство будет верным и округлите до десятых :) Даю 40 баллов

Answers & Comments

crafting2000203 $x^2-6x-1=0 \\ D=36+4=40 \\ x_1=(6+ \sqrt{40})/2 \\ x_2=(6- \sqrt{40})/2$
x1≈6.2,x2≈-0.2

$x^2-x=x+2 \\ x^2-2x-2=0 \\ D=4+8=12 \\ x_1=(2+ \sqrt{12} )/2 \\ x_2=(2- \sqrt{12} )/2$
x1≈2.8,x2≈-0.7

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