Mathematics, 31.12.2019 07:31 arroyoe342

What is the binomial expansion of (x + 2y)7?
a: 2x7 + 14x6y + 42x5y2 + 70x4y3 + 70x3y4 + 42x2y5 + 14xy6 + 2y7
b: x7 + 14x6y + 42x5y2 + 70x4y3 + 70x3y4 + 42x2y5 + 14xy6 + y7
c: x7 + 7x6y + 21x5y2 + 35x4y3 + 35x3y4 + 21x2y5 + 7xy6 + y7
d: x7 + 14x6y + 84x5y2 + 280x4y3 + 560x3y4 + 672x2y5 + 448xy6 + 128y7

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What is the binomial expansion of (x + 2y)7?
a: 2x7 + 14x6y + 42x5y2 + 70x4y3 + 70x3y4 + 42x...