Question

(x+¼）²-（x-¼）（x+¼）=¼ 等于多少啊

Answer 1

(x+¼）²-（x-¼）（x+¼）=¼

(x+¼）²-（x-¼）（x+¼）-¼ = 0

x^2 + 2*1/4* x +(¼）²- x^2 +( ¼)^2 - ¼ = 0

1/2 x +1/16+1/16-1/4= 0

x+1/8+1/8-1/2=0

x-1/4=0

x=1/4