a2−4b2a+2b\frac{a^2-4b^2}{a+2b}a+2ba2−4b2
910+−12910+-12910+−12
x3−9x^3-9x3−9
−3(2x−1)2-3\left(2x-1\right)^2−3(2x−1)2
(2x + 4y + 3) (2x + 2) \left(2x\:+\:4y\:+\:3\right)\:\left(2x\:+\:2\right)\:(2x+4y+3)(2x+2)
∫t−15t2+2t−3dt\int\frac{t-15}{t^2+2t-3}dt∫t2+2t−3t−15dt
6+9y2\sqrt{6+9y^2}6+9y2
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