2cot2(x)=42\cot^2\left(x\right)=42cot2(x)=4
27a3−64b627a^3-64b^627a3−64b6
(x2+x+12)2\left(x^2+x+\frac{1}{2}\right)^2(x2+x+21)2
y2+45<−3\frac{y}{2}+\frac{4}{5}<-32y+54<−3
sin (cos (θ )+sin (θ ))(1+cos (θ ))(1−cos (θ ))=1+cot\frac{\sin\:\left(\cos\:\left(\theta\:\right)+\sin\:\left(\theta\:\right)\right)}{\left(1+\cos\:\left(\theta\:\right)\right)\left(1-\cos\:\left(\theta\:\right)\right)}=1+cot(1+cos(θ))(1−cos(θ))sin(cos(θ)+sin(θ))=1+cot
b−14b+49b-14b+49b−14b+49
−2x+3≥−9x−4-2x+3\ge-9x-4−2x+3≥−9x−4
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