The coefficient of y in the expansion of (5 − y) ^2 is:- (1 Point) 5 10 -10 1

Question

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

(1 Point)

5

10

-10

1

in progress 0
Valentina 1 month 2021-08-20T04:15:00+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-08-20T04:16:03+00:00

    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

    0
    2021-08-20T04:16:03+00:00

    Answer:

    Step-by-step explanation:

    1 is the answer

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