化简3sin^2x+5sinxcosx-2cos^2x=?

2sin平方x +cos平方x+3sinxcosx化简 化简 -根号3sin平方x+sinxcosx, 化简 -根号3sin平方x+sinxcosx, 化简3sin^2x+5sinxcosx-2cos^2x=? 化简sin(2x+π/3)-（根号3）sin²x+sinxcosx+(根号3)/2 f(x)=sin^2x+sinxcosx-1/2,化简 f(x)=sin²x+根号3sinxcosx 化简 sin²X-sinxcosx+2cos²x=化简 化简cos^4x-2sinxcosx-sin^4x f(x)=sin(x^2)+(√3)sinxcosx+2cos(x^2) 化简 f(x)=sin(x^2)+(√3)sinxcosx+2cos(x^2) 化简 化简F(X)=2COSXCOSX(π/6-X)-根号3SIN^2X+SINXCOSX f(x)=sin^4x+2√3sinxcosx-cos^4x化简 化简f(x)=根号3sinxcosx-sin^2x,x∈R 已知f(x)=cos^4x-2根号3sinxcosx-sin^4x 化简 y=2sin^2 x+4sinxcosx+5cos^2 x 化简 2sin^2x-sinxcosx-3cos^2x=0 化简 y=sin^2x-根号3sinxcosx-cos^2x化简