解下列一元二次方程 x^-49=0 2y^2=128 2x^-1/2=0 (3y-7)^2=3 7-2x^2=-15 t^2-45=0 (x+5)^2=16

问题描述:

解下列一元二次方程 x^-49=0 2y^2=128 2x^-1/2=0 (3y-7)^2=3 7-2x^2=-15 t^2-45=0 (x+5)^2=16