4a−2(7−3a)+54a-2\left(7-3a\right)+54a−2(7−3a)+5
125 ⋅15125\:\:\cdot\frac{1}{5}125⋅51
225−10w+55z225-10w+55z225−10w+55z
∫7x249−x2dx\int\frac{7}{x^2\sqrt{49-x^2}}dx∫x249−x27dx
x2−1x3+x\frac{x^2-1}{x^3+x}x3+xx2−1
(7x)−12\left(7x\right)^{-\frac{1}{2}}(7x)−21
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