(1):x的平方+3x=10
x(x+3)=0
x=0或x=-3
(2):(x-2)的平方-8=0
(x-2)²=8
x-2=±2√2
x=2+2√2或x=2-2√2
(3):(5x-3)²-2(5x-3)-3=0
[(5x-3)-3][(5x-3)+1]=0
(5x-6)(5x-2)=0
x-6/5或x=2/5
(1):x的平方+3x=10
x(x+3)=0
x=0或x=-3
(2):(x-2)的平方-8=0
(x-2)²=8
x-2=±2√2
x=2+2√2或x=2-2√2
(3):(5x-3)²-2(5x-3)-3=0
[(5x-3)-3][(5x-3)+1]=0
(5x-6)(5x-2)=0
x-6/5或x=2/5