(3y−x−2a+8)−(2x−5y+a+8)\left(3y-x-2a+8\right)-\left(2x-5y+a+8\right)(3y−x−2a+8)−(2x−5y+a+8)
x2+16x−42=0x^2+16x-42=0x2+16x−42=0
(3m−2)3\left(3m-2\right)^3(3m−2)3
169x2+260xy+4x169x^2+260xy+4x169x2+260xy+4x
cosx⋅cotx−cosx=0cosx\cdot cotx-cosx=0cosx⋅cotx−cosx=0
3cscx−2=0\sqrt{3}\csc x-2=03cscx−2=0
(2x)2−2(2x)(−5)2\left(2x\right)^2-2\left(2x\right)\left(-5\right)^2(2x)2−2(2x)(−5)2
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