Rozwiąż równania.
a) (x+4)^ = x(6+x)
b)(3x+2)^ = x(-2+9x)
a) (x+4)²=x(6+x)
x²+8x+16=6x+x²
8x-6x=-16
2x=-16 /:2
x=-8
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b) (3x+2)²=x(-2+9x)
9x²+12x+4=-2x+9x²
12x+2x=-4
14x=-4 /:14
x=-4/14
x=-2/7
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a) (x+4)²=x(6+x)
x²+8x+16=6x+x²
8x-6x=-16
2x=-16 /:2
x=-8
========================================================================
b) (3x+2)²=x(-2+9x)
9x²+12x+4=-2x+9x²
12x+2x=-4
14x=-4 /:14
x=-4/14
x=-2/7
=================================================================