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Popular Algebra >

expand (x\sqrt[3]{2}+ysqrt(3))^{20}

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Solution

expand (x32​+y3​)20

Solution

64⋅232​x20+128032​3​x19y+36480x18y2+109440⋅232​3​x17y3+139536032​x16y4+44651523​x15y5+16744320⋅232​x14y6+3348864032​3​x13y7+163257120x12y8+108838080⋅232​3​x11y9+35916566432​x10y10+3265142403​x9y11+367328520⋅232​x8y12+22604832032​3​x7y13+339072480x6y14+67814496⋅232​3​x5y15+6357609032​x4y16+149590803​x3y17+3739770⋅232​x2y18+39366032​3​xy19+59049y20
Solution steps
(x32​+y3​)20
=(32​x+3​y)20
Apply binomial theorem: (a+b)n=i=0∑n​(in​)a(n−i)bia=x32​,b=y3​
=i=0∑20​(i20​)(x32​)(20−i)(y3​)i
Expand summation
=0!(20−0)!20!​(x32​)20(y3​)0+1!(20−1)!20!​(x32​)19(y3​)1+2!(20−2)!20!​(x32​)18(y3​)2+3!(20−3)!20!​(x32​)17(y3​)3+4!(20−4)!20!​(x32​)16(y3​)4+5!(20−5)!20!​(x32​)15(y3​)5+6!(20−6)!20!​(x32​)14(y3​)6+7!(20−7)!20!​(x32​)13(y3​)7+8!(20−8)!20!​(x32​)12(y3​)8+9!(20−9)!20!​(x32​)11(y3​)9+10!(20−10)!20!​(x32​)10(y3​)10+11!(20−11)!20!​(x32​)9(y3​)11+12!(20−12)!20!​(x32​)8(y3​)12+13!(20−13)!20!​(x32​)7(y3​)13+14!(20−14)!20!​(x32​)6(y3​)14+15!(20−15)!20!​(x32​)5(y3​)15+16!(20−16)!20!​(x32​)4(y3​)16+17!(20−17)!20!​(x32​)3(y3​)17+18!(20−18)!20!​(x32​)2(y3​)18+19!(20−19)!20!​(x32​)1(y3​)19+20!(20−20)!20!​(x32​)0(y3​)20
Simplify 0!(20−0)!20!​(x32​)20(y3​)0:64⋅232​x20
Simplify 1!(20−1)!20!​(x32​)19(y3​)1:128032​3​x19y
Simplify 2!(20−2)!20!​(x32​)18(y3​)2:36480x18y2
Simplify 3!(20−3)!20!​(x32​)17(y3​)3:109440⋅232​3​x17y3
Simplify 4!(20−4)!20!​(x32​)16(y3​)4:139536032​x16y4
Simplify 5!(20−5)!20!​(x32​)15(y3​)5:44651523​x15y5
Simplify 6!(20−6)!20!​(x32​)14(y3​)6:16744320⋅232​x14y6
Simplify 7!(20−7)!20!​(x32​)13(y3​)7:3348864032​3​x13y7
Simplify 8!(20−8)!20!​(x32​)12(y3​)8:163257120x12y8
Simplify 9!(20−9)!20!​(x32​)11(y3​)9:108838080⋅232​3​x11y9
Simplify 10!(20−10)!20!​(x32​)10(y3​)10:35916566432​x10y10
Simplify 11!(20−11)!20!​(x32​)9(y3​)11:3265142403​x9y11
Simplify 12!(20−12)!20!​(x32​)8(y3​)12:367328520⋅232​x8y12
Simplify 13!(20−13)!20!​(x32​)7(y3​)13:22604832032​3​x7y13
Simplify 14!(20−14)!20!​(x32​)6(y3​)14:339072480x6y14
Simplify 15!(20−15)!20!​(x32​)5(y3​)15:67814496⋅232​3​x5y15
Simplify 16!(20−16)!20!​(x32​)4(y3​)16:6357609032​x4y16
Simplify 17!(20−17)!20!​(x32​)3(y3​)17:149590803​x3y17
Simplify 18!(20−18)!20!​(x32​)2(y3​)18:3739770⋅232​x2y18
Simplify 19!(20−19)!20!​(x32​)1(y3​)19:39366032​3​xy19
Simplify 20!(20−20)!20!​(x32​)0(y3​)20:59049y20
=64⋅232​x20+128032​3​x19y+36480x18y2+109440⋅232​3​x17y3+139536032​x16y4+44651523​x15y5+16744320⋅232​x14y6+3348864032​3​x13y7+163257120x12y8+108838080⋅232​3​x11y9+35916566432​x10y10+3265142403​x9y11+367328520⋅232​x8y12+22604832032​3​x7y13+339072480x6y14+67814496⋅232​3​x5y15+6357609032​x4y16+149590803​x3y17+3739770⋅232​x2y18+39366032​3​xy19+59049y20

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