10.x²+12x+36-1=x²+12x+35=(x+5)(x+7)
x²+12x+35=0
D=144-140=4
x1=-12-2/2=-7
x2=-12+2/2=-5
11.x²-12x+35=(x-5)(x-7)
D=144-140=4
x1=12-2/2=5
x2=12+2/2=7
12.x^4-8x²+7=(x-1)(x-7)
x²=t
t²-8t+7=0
D=64-28=36
x1=8-6/2=1
x2=8+6/2=7
13.16x²-20x+4=(x-1)(x-4)
4x²-5x+1=0
D=25-16=9
x1=5-3/2=1
x2=5+3/2=4
14.36x²+42x+6=(x+6)(x+1)
6x²+7x+1=0
D=49-24=25
x1=-7-5/2=-6
x2=-7+5/2=-1
я думаю,что так)