sin(2x)=−0.4\sin\left(2x\right)=-0.4sin(2x)=−0.4
84:2884:2884:28
13.26+2.78−17.49+6.174−613.26+2.78-17.49+6.174-613.26+2.78−17.49+6.174−6
x2+28x+361x^2+28x+361x2+28x+361
x4+16x+2\frac{x^4+16}{x+2}x+2x4+16
x2−3x+1.5x^2-3x+1.5x2−3x+1.5
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