a) x²+2x-4x-8-x²-6x+5x+30+x=0
-2x+22=0
-2x=-22
x=11
б) 6х²+3х+10х+5=6х²-18х+5х-15+7
13х+5=-13х-8
13х+13х=-8-5
26х=-13
2х=-1
х=1/2
a) x²+2x-4x-8-x²-6x+5x+30+x=0
-2x+22=0
-2x=-22
x=11
б) 6х²+3х+10х+5=6х²-18х+5х-15+7
13х+5=-13х-8
13х+13х=-8-5
26х=-13
2х=-1
х=1/2