(3y4)2\left(3y^4\right)^2(3y4)2
4x−184x-184x−18
27− 36 + 90 −(−45)27-\:36\:+\:90\:-\left(-45\right)27−36+90−(−45)
3x2−6x−33x^2-6x-33x2−6x−3
−[−13+(24−68)]−(−48+95)-\left[-13+\left(24-68\right)\right]-\left(-48+95\right)−[−13+(24−68)]−(−48+95)
2x−2x+8x2x-2x+8x2x−2x+8x
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