(2x4−5x3+6x2−5x+4) . (3x3−4x2+5x−2)\left(2x^4-5x^3+6x^2-5x+4\right)\:.\:\left(3x^3-4x^2+5x-2\right)(2x4−5x3+6x2−5x+4).(3x3−4x2+5x−2)
2cos2x+5sinx−4=02cos^2x+5sinx-4=02cos2x+5sinx−4=0
cosx−cos2x=cscx−cotxcotx+tanxcosx-cos^2x=\frac{cscx-cotx}{cotx+tanx}cosx−cos2x=cotx+tanxcscx−cotx
cot(tan+cot)\cot\left(\tan+\cot\right)cot(tan+cot)
y2+y+.25y^2+y+.25y2+y+.25
sec(x)2−csc(x)2=1\sec\left(x\right)^2-\csc\left(x\right)^2=1sec(x)2−csc(x)2=1
6x2+27x+13x+4\frac{6x^2+27x+13}{x+4}x+46x2+27x+13
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