a x + b y = 2 a 2 − 3 b 2\:\:a\:x\:\:\:+\:\:\:b\:y\:\:\:=\:\:\:2\:a\:2\:\:\:-\:\:\:3\:b\:2ax+by=2a2−3b2
(6n2−5n−4)\left(6n^2-5n-4\right)(6n2−5n−4)
(9x−4y+4)dx=(2x−y+1)dy\left(9x-4y+4\right)dx=\left(2x-y+1\right)dy(9x−4y+4)dx=(2x−y+1)dy
3x2−10x−83x^2-10x-83x2−10x−8
∫(1(1+x2)tan−1(x))dx\int\left(\frac{1}{\left(1+x^2\right)\tan^{-1}\left(x\right)}\right)dx∫((1+x2)tan−1(x)1)dx
3x2+2x2+x+23x^2+2x^2+x+23x2+2x2+x+2
(27x2)(x4)\frac{\left(\frac{2}{7}x^2\right)}{\left(x^4\right)}(x4)(72x2)
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