x=2y+1x=2y+1x=2y+1
limx→∞(−4x)\lim_{x\to\infty}\left(-4x\right)x→∞lim(−4x)
−t3+3t2−9t−t\frac{-t^3+3t^2-9t}{-t}−t−t3+3t2−9t
7x2+21x−2< 07x^2+21x-2<\:07x2+21x−2<0
x2+16x−4x^2+16x-4x2+16x−4
52−255+5\frac{5^2-25}{5+5}5+552−25
(p−3z)2\left(p-3z\right)^2(p−3z)2
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