Помогите решить уравнения.. Created by Eira02. algebra-ru

Помогите решить уравнения...

mikael2 В) y²=196 y=+-√196 y=14 y=-14
г) y²=64/225 y=8/15 y=-8/15

в) x(49x²-1) x1=0 x2=√1/49=1/7 x3=-1/7
г) 2x²(x²-16)=0 x1=0 x2=4 x3=-4

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Eira02 Спасибо)

Асик777Асик В)196-у²=0
у²=196
у=+14, -14.
г)225у²-64=0
225у²=64
$y^2= \frac{64}{225}\\ y=+ \frac{8}{15}, - \frac{8}{15}$
в)49х³-х=0
х(49-х²)=0
х(7-х)(7+х)=0
х=0, х=7, х=-7
г)2х⁴-32х²=0
2х²(х²-16)=0
2х²(х-4)(х+4)=0
х=0, х=4, х=-4.

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Eira02 Благадарю

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