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a fost răspuns

Scrie o expansiune binom de studii:
a) (3a + b) ^ 8
b)(1/x+1/y)^5
c)(2a+3x)^4

Răspuns :

Matepentrutoti
a)b^8+24*a*b^7+252*a^2*b^6+1512*a^3*b^5+5670*a^4*b^4+13608*a^5*b^3+20412*a^6*b^2+17496*a^7*b+6561*a^8
b)5/(x^4*y)+10/(x^3*y^2)+10/(x^2*y^3)+5/(x*y^4)+1/y^5+1/x^5
c)81*x^4+216*a*x^3+216*a^2*x^2+96*a^3*x+16*a^4