a2+2a2+2(a)(2a)cos(60)\sqrt{a^2+2a^2+2\left(a\right)\left(2a\right)\cos\left(60\right)}a2+2a2+2(a)(2a)cos(60)
(9a2+5x3)2\left(9a^2+5x^3\right)^2(9a2+5x3)2
(d+5d)2\left(d+5d\right)^2(d+5d)2
n6−14n4+49n2−36n^6-14n^4+49n^2-36n6−14n4+49n2−36
81x4−y481x^4-y^481x4−y4
(x−t)x′=x\left(x-t\right)x'=x(x−t)x′=x
4(6x−6)+4(−2x+9)4\left(6x-6\right)+4\left(-2x+9\right)4(6x−6)+4(−2x+9)
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