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解方程.
3x(x+2)-2(x2+5)=(x-2)(x+3)
(1)(x+1)2+2(x+1)-4=0
(2)2x2+1=3x
(3)(2x-1)2=x2+4x+4
解方程:(1)(2x+3)2-25=0 (2)x2+3x+1=0.
解方程:(1)x2-4x+2=0;(2)2(x-3)=3x(x-3).
解方程:
(1)(2x+3)2-25=0 (2)x2+3x+1=0.