For the binomial expansion of (x + y)^10, the value of k in the term 210x 6y k is a) 6 b) 4 c) 5 d) 7

a) 6

Step-by-step explanation:

Expanding the polynomial using the formula:

Also

I think you mean

We can deduce that this term will be located somewhere in the middle. So I will calculate .

For

Note that we actually don't need to do all this process. There's no necessity to calculate the binomial, just

For

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3

step-by-step explanation: