(35)−1\left(3^5\right)^{-1}(35)−1
x2+7x+10x+6\frac{x^2+7x+10}{x+6}x+6x2+7x+10
2sin2a=2−2cos2a2\sin^2a=2-2\cos^2a2sin2a=2−2cos2a
(3x2+6x+2)(5x−8)\left(3x^2+6x+2\right)\left(5x-8\right)(3x2+6x+2)(5x−8)
x3−2(x+3)=3−x2−12\frac{x}{3}-2\left(x+3\right)=\frac{3-x}{2}-\frac{1}{2}3x−2(x+3)=23−x−21
18+x=2718+x=2718+x=27
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