СРОЧНО ПОСЧИТАЙТЕ УРАВНЕНИЯ АААА. Created by emanon2. algebra-ru

СРОЧНО ПОСЧИТАЙТЕ УРАВНЕНИЯ АААА...

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СРОЧНО ПОСЧИТАЙТЕ УРАВНЕНИЯ АААА

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Yumma А. Х= +-2

Б. Х= +-1/3

В. 3х^2=27
х^2=9
х=+-3

Г. (2х+3) ^2=8
4х^2+12х+9=8
4х^2+12х+1=0
Д=144-4*4=128 = 4*4*4*2
Х= (-12 +- 8корень2) /4=
Х= -3 +- 2корень2

Д. х^2= (корень6+2корень5) ^2-4корень30
Х^2= 5+4корень30+20-4корень30
Х^2=5+20
Х^2=25
Х= +-5

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