解方程:x^2+x-12=0.解方程:$x^{2}+x-12=0$.
配方法解方程:(1)x2-3x-2=0;(2)3x2-6x-1=0.配方法解方程:(1)x2-3x-2=0;(2)3x2-6x-1=0.
例4 解方程-|||-^2-6x+9=0.
解方程:2x^2+5x-3=0解方程:$$2x^2+5x-3=0$$
解方程:2x^2-5x-3=0解方程:$$2x^2-5x-3=0$$
(1)解方程:-|||-^2-3x+1=0;
解方程组: ) (x)_(1)-(x)_(2)-(x)_(3)=2 2(x)_(1)-(x)_(2)-3(x)_(3)=1 3(x)_(1)+2(x)_(2)
[题目]解方程: (x)^2+7x+2=0
2.解方程组 ) (x)_(1)+(x)_(2)+(x)_(3) (x)_(1)+(x)_(2)-(x)_(3)-(x)_(4)=1 5(x)_(1)+5(
用克莱姆法则求解方程组 ) 2(x)_(1)-3(x)_(2)-3=0 3(x)_(1)-(x)_(2)-8=0 .用克莱姆法则求解方程组,其中是。