Question

Write the coefficient of y in the expansion (5-y)²​

Answer 1

Answer:

g678t t d 4 Roche 5iu4ici

Answer 2

$question = (5 - y)^{2} \\ formula = (x - y)^{2} = {x}^{2} - 2xy + {y}^{2} \\ {5}^{2} - 2(5)(y) + {y}^{2} \\ 25 - 10y + {y}^{2} \\ or = {y}^{2} - 10y + 25 \: \: answer...$