7⋅2+6⋅9+8⋅47\cdot2+6\cdot9+8\cdot47⋅2+6⋅9+8⋅4
2cos2(y)+sin2(y)−cos2(y)2\cos^2\left(y\right)+\sin^2\left(y\right)-\cos^2\left(y\right)2cos2(y)+sin2(y)−cos2(y)
x(x+6)=55x\left(x+6\right)=55x(x+6)=55
5x−y=55x-y=55x−y=5
5x+5\sqrt{5x+5}5x+5
62−7(8+6−32)6^2-7\left(8+6-3^2\right)62−7(8+6−32)
sin(3x)=−4sin3(x)+3sin(x)\sin\left(3x\right)=-4\sin^3\left(x\right)+3\sin\left(x\right)sin(3x)=−4sin3(x)+3sin(x)
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