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Popular Algebra >

expand (x+y)^{17}

Solution

expand

(x + y)^{17}

Solution

x^{17} + 17 x^{16} y + 136 x^{15} y^{2} + 680 x^{14} y^{3} + 2380 x^{13} y^{4} + 6188 x^{12} y^{5} + 12376 x^{11} y^{6} + 19448 x^{10} y^{7} + 24310 x^{9} y^{8} + 24310 x^{8} y^{9} + 19448 x^{7} y^{10} + 12376 x^{6} y^{11} + 6188 x^{5} y^{12} + 2380 x^{4} y^{13} + 680 x^{3} y^{14} + 136 x^{2} y^{15} + 17 x y^{16} + y^{17}

Solution steps

(x + y)^{17}

Apply binomial theorem:

(a + b)^{n} = i = 0 \sum n (i n) a^{(n - i)} b^{i}

a = x, b = y

= i = 0 \sum 17 (i 17) x^{(17 - i)} y^{i}

Expand summation

= \frac{17 !}{0 ! ( 17 - 0 ) !} x^{17} y^{0} + \frac{17 !}{1 ! ( 17 - 1 ) !} x^{16} y^{1} + \frac{17 !}{2 ! ( 17 - 2 ) !} x^{15} y^{2} + \frac{17 !}{3 ! ( 17 - 3 ) !} x^{14} y^{3} + \frac{17 !}{4 ! ( 17 - 4 ) !} x^{13} y^{4} + \frac{17 !}{5 ! ( 17 - 5 ) !} x^{12} y^{5} + \frac{17 !}{6 ! ( 17 - 6 ) !} x^{11} y^{6} + \frac{17 !}{7 ! ( 17 - 7 ) !} x^{10} y^{7} + \frac{17 !}{8 ! ( 17 - 8 ) !} x^{9} y^{8} + \frac{17 !}{9 ! ( 17 - 9 ) !} x^{8} y^{9} + \frac{17 !}{10 ! ( 17 - 10 ) !} x^{7} y^{10} + \frac{17 !}{11 ! ( 17 - 11 ) !} x^{6} y^{11} + \frac{17 !}{12 ! ( 17 - 12 ) !} x^{5} y^{12} + \frac{17 !}{13 ! ( 17 - 13 ) !} x^{4} y^{13} + \frac{17 !}{14 ! ( 17 - 14 ) !} x^{3} y^{14} + \frac{17 !}{15 ! ( 17 - 15 ) !} x^{2} y^{15} + \frac{17 !}{16 ! ( 17 - 16 ) !} x^{1} y^{16} + \frac{17 !}{17 ! ( 17 - 17 ) !} x^{0} y^{17}

Simplify

\frac{17 !}{0 ! ( 17 - 0 ) !} x^{17} y^{0} : x^{17}

Simplify

\frac{17 !}{1 ! ( 17 - 1 ) !} x^{16} y^{1} : 17 x^{16} y

Simplify

\frac{17 !}{2 ! ( 17 - 2 ) !} x^{15} y^{2} : 136 x^{15} y^{2}

Simplify

\frac{17 !}{3 ! ( 17 - 3 ) !} x^{14} y^{3} : 680 x^{14} y^{3}

Simplify

\frac{17 !}{4 ! ( 17 - 4 ) !} x^{13} y^{4} : 2380 x^{13} y^{4}

Simplify

\frac{17 !}{5 ! ( 17 - 5 ) !} x^{12} y^{5} : 6188 x^{12} y^{5}

Simplify

\frac{17 !}{6 ! ( 17 - 6 ) !} x^{11} y^{6} : 12376 x^{11} y^{6}

Simplify

\frac{17 !}{7 ! ( 17 - 7 ) !} x^{10} y^{7} : 19448 x^{10} y^{7}

Simplify

\frac{17 !}{8 ! ( 17 - 8 ) !} x^{9} y^{8} : 24310 x^{9} y^{8}

Simplify

\frac{17 !}{9 ! ( 17 - 9 ) !} x^{8} y^{9} : 24310 x^{8} y^{9}

Simplify

\frac{17 !}{10 ! ( 17 - 10 ) !} x^{7} y^{10} : 19448 x^{7} y^{10}

Simplify

\frac{17 !}{11 ! ( 17 - 11 ) !} x^{6} y^{11} : 12376 x^{6} y^{11}

Simplify

\frac{17 !}{12 ! ( 17 - 12 ) !} x^{5} y^{12} : 6188 x^{5} y^{12}

Simplify

\frac{17 !}{13 ! ( 17 - 13 ) !} x^{4} y^{13} : 2380 x^{4} y^{13}

Simplify

\frac{17 !}{14 ! ( 17 - 14 ) !} x^{3} y^{14} : 680 x^{3} y^{14}

Simplify

\frac{17 !}{15 ! ( 17 - 15 ) !} x^{2} y^{15} : 136 x^{2} y^{15}

Simplify

\frac{17 !}{16 ! ( 17 - 16 ) !} x^{1} y^{16} : 17 x y^{16}

Simplify

\frac{17 !}{17 ! ( 17 - 17 ) !} x^{0} y^{17} : y^{17}

= x^{17} + 17 x^{16} y + 136 x^{15} y^{2} + 680 x^{14} y^{3} + 2380 x^{13} y^{4} + 6188 x^{12} y^{5} + 12376 x^{11} y^{6} + 19448 x^{10} y^{7} + 24310 x^{9} y^{8} + 24310 x^{8} y^{9} + 19448 x^{7} y^{10} + 12376 x^{6} y^{11} + 6188 x^{5} y^{12} + 2380 x^{4} y^{13} + 680 x^{3} y^{14} + 136 x^{2} y^{15} + 17 x y^{16} + y^{17}

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