(1)3(x-5)²=25-x² (2)2(t-1)²+t=1

问题描述:

(1)3(x-5)²=25-x² (2)2(t-1)²+t=1

(1)3(x-5)²=25-x²
3(x-5)²=(5-x)(5+x)
3(x-5)²+(x-5)(x+5)=0
(x-5)(3x-15+x+5)=0
(x-5)(4x-10)=0
(x-5)(2x-5)=0
x=5 或x=5/2
2)2(t-1)²+t=1
2(t-1)²+t-1=0
(t-1)(2t-2+1)=0
(t-1)(2t-1)=0
t=1 或 t=1/2
希望能帮你忙,不懂请追问,懂了请采纳,谢谢

3(x-5)²+(x+5)(x-5)=0
(x-5)(3x-15+x+5)=0
x=5,x=5/2
2(t-1)²+(t-1)=0
(t-1)(2t-2+1)=0
t=1,t=1/2