4(2)5+12(2)4−(2)−34\left(2\right)^5+12\left(2\right)^4-\left(2\right)-34(2)5+12(2)4−(2)−3
x2+9x+49x^2+9x+49x2+9x+49
limx→1x2+5x−1−x3+5x−1x−1\lim_{x\to1}\frac{\sqrt{x^2+5x-1}-\sqrt{x^3+5x-1}}{x-1}x→1limx−1x2+5x−1−x3+5x−1
limx→ 0(ex−1)2x\lim x\to\:\:0\frac{\left(e^x-1\right)}{2x}limx→02x(ex−1)
9x+4y; x=−2.y=79x+4y;\:x=-2.y=79x+4y;x=−2.y=7
ddx3x−7x+2\frac{d}{dx}\frac{3x-7}{x+2}dxdx+23x−7
x2+3x−2>0x^2+3x-2>0x2+3x−2>0
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