x+10+x+12x+10+x+12x+10+x+12
(37x+12y−5)−(−67x+43y)+(54x)\left(\frac{3}{7}x+\frac{1}{2}y-5\right)-\left(-\frac{6}{7}x+\frac{4}{3}y\right)+\left(\frac{5}{4}x\right)(73x+21y−5)−(−76x+34y)+(45x)
(a2m+1−4am−1bn)2\left(a^{2m+1}-4a^{m-1}b^n\right)^2(a2m+1−4am−1bn)2
x4+2x2+x+4\frac{x^4+2}{x^2+x+4}x2+x+4x4+2
∫1xx2−49dx\int\frac{1}{x\sqrt{x^2-49}}dx∫xx2−491dx
−3x<6-3x<6−3x<6
(1+x2)2dydx+2x+2xy2=0\left(1+x^2\right)^2\frac{dy}{dx}+2x+2xy^2=0(1+x2)2dxdy+2x+2xy2=0
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