(1)x^2+10x+16=0 (2)x^2-x-3/4 (3)3(x^2+2x)-5=0
(x+5)^2-8=0 (x-1/2)^2-1=0 3(x+1)^2-8=0
(x+5)^2=8 (x-1/2)^2=1 (x+1)^2=8/3
x+5=2倍的根号2 x=1/2 x=(2倍根号6/5)-1
x=(2倍的根号2)-5
(4)4(x^2-1/4x)-9=0
4(x-1/2)^2-10=0
(x-1/2)^2=2/5
x=(2倍根号10-5)/10
(1)x^2+10x+16=0 (2)x^2-x-3/4 (3)3(x^2+2x)-5=0
(x+5)^2-8=0 (x-1/2)^2-1=0 3(x+1)^2-8=0
(x+5)^2=8 (x-1/2)^2=1 (x+1)^2=8/3
x+5=2倍的根号2 x=1/2 x=(2倍根号6/5)-1
x=(2倍的根号2)-5
(4)4(x^2-1/4x)-9=0
4(x-1/2)^2-10=0
(x-1/2)^2=2/5
x=(2倍根号10-5)/10