3x2+10x=03x^2+10x=03x2+10x=0
−10⋅24-10\cdot24−10⋅24
26−∣−10∣+(−5)26-\left|-10\right|+\left(-5\right)26−∣−10∣+(−5)
2x2−5x+3x−3\frac{2x^2-5x+3}{x-3}x−32x2−5x+3
limx→π2(2x−πcosx)\lim_{x\to\frac{\pi}{2}}\left(\frac{2x-\pi}{cosx}\right)x→2πlim(cosx2x−π)
x2+y2+z2−2x+z=0x^2+y^2+z^2-2x+z=0x2+y2+z2−2x+z=0
cot2(cscx+1)=cscx−1cscx+1\frac{cot^2}{\left(cscx+1\right)}=\frac{cscx-1}{cscx+1}(cscx+1)cot2=cscx+1cscx−1
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