Question

write the cefficient of x2 in the expansion of (x-2)3​

Answer 1

Step-by-step explanation:

(x-2)3 = 3x-6 = x = 2 .........

Answer 2

Answer:

coefficient of x² is -6.

Step-by-step explanation:

We know, (a−b)³ = a³ - b³ - 3a²b + 3ab²

So, ( x - 2 )³ = (x)³ - (2)³ - 3 (x)²(2) + 3 (x)(2)²

= x³ - 8 - 6x² + 12x

So,here we can see coefficient of x² is -6.