10−1⋅(−9)10-1\cdot\left(-9\right)10−1⋅(−9)
∫yy2+1dy\int\frac{y}{\sqrt[2]{y}+1}dy∫2y+1ydy
4ab2a4b\frac{4ab}{2a^4b}2a4b4ab
∫x3x2+49dx\int\frac{x^{3}}{\sqrt{x^{2}+49}}dx∫x2+49x3dx
12−1⋅(−1)12-1\cdot\left(-1\right)12−1⋅(−1)
773.52.7\frac{773.5}{2.7}2.7773.5
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