−3a+1; a=7-3a+1;\:a=7−3a+1;a=7
36a2−b236a^2-b^236a2−b2
(123)(−6)\left(123\right)\left(-6\right)(123)(−6)
ddx(x3+y2+cos(x)y=3xy)\frac{d}{dx}\left(x^3+y^2+\cos\left(x\right)y=3xy\right)dxd(x3+y2+cos(x)y=3xy)
6x2−13x−56x^2-13x-56x2−13x−5
(x2−62x4)(x+152x2)\left(\frac{x^2-6}{2x^4}\right)\left(\frac{x+15}{2x^2}\right)(2x4x2−6)(2x2x+15)
x3−3x2+4x^3-3x^2+4x3−3x2+4
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