题目内容：

已知sinα是方程5x²-7x-6=0的根,求[sin(-α+3π/2)sin(π-α)tan²(2π-α)]
[sin(-α+3π/2)sin(π-α)tan²(2π-α)]/[cos(π-α)cos(π/2+α)tan(π-α)]的值

优质解答

(x-2)(5x+3)=0
0