Question

The coefficient of y in the expansion of (5 − y) ^2 is:-

(1 Point)

5

10

-10

1


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Answer 1

Answer:

Step-by-step explanation:

1 is the answer

Answer 2

Answer:

$(5 - y) ^{2} \\ \\ = 5 ^{2} - 2\times 5 \times y + y ^{2} \\ \\ = 25 - 10y + y ^{2} \\ \\ = y ^{2} - 10y + 25 \\ \\ formula \: used \\ \\( a - b) ^{2} = a^{2} - 2ab + b ^{2}$

⭐ So coefficient of y = 10

option (b) is ✔

hope it helps uH ☺