∫2x+4x−9dx\int\frac{2x+4}{x-9}dx∫x−92x+4dx
9x2−159x^2-159x2−15
3(m+6)3\left(m+6\right)3(m+6)
(3a2+5b)2\left(3a^2+5b\right)^2(3a2+5b)2
(a + b − 1)(a2 + 1) − a2− 1\left(a\:+\:b\:-\:1\right)\left(a^2\:+\:1\right)\:-\:a^2-\:1(a+b−1)(a2+1)−a2−1
tan2θ =sin2θ (1+tan2θ )tan^2\theta\:=sin^2\theta\:\left(1+tan^2\theta\:\right)tan2θ=sin2θ(1+tan2θ)
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