1) (y+4)²= 3y²-8
y²+8y+16=3y²-8
y²+8y+16-3y²+8=0
-2y²+8y+24=0
y²-4y-12=0
y²+2y-6y-12=0
y(y+2)-6(y+2)=0
(y+2)(y-6)=0
y+2=0 y-6=0
y=-2 y=6
2) (9-4x)²=5(3x+2)
81-72x+16x²=15x+10
81-72x+16x²-15x-10=0
71-87x²+16x²=0
16x²-87x+71=0
16x²-16x-71x+71=0
16x(x-1)-71(x-1)=0
(x-1)(16x-71)=0
x-1=0; 16x-71=0
x=1; x=71/16(дробь) или 4,4375
1) (y+4)²= 3y²-8
y²+8y+16=3y²-8
y²+8y+16-3y²+8=0
-2y²+8y+24=0
y²-4y-12=0
y²+2y-6y-12=0
y(y+2)-6(y+2)=0
(y+2)(y-6)=0
y+2=0 y-6=0
y=-2 y=6
2) (9-4x)²=5(3x+2)
81-72x+16x²=15x+10
81-72x+16x²-15x-10=0
71-87x²+16x²=0
16x²-87x+71=0
16x²-16x-71x+71=0
16x(x-1)-71(x-1)=0
(x-1)(16x-71)=0
x-1=0; 16x-71=0
x=1; x=71/16(дробь) или 4,4375