Question

The expansion of (3-k)^2 is _______​

Answer 1

Answer:

Step-by-step explanation:

3^2-2.3.k+k^2

9-6k+k^2

Answer 2

Answer:

9 - 6k + k

Step-by-step explanation:

$(a - b) ^{2} =(a) ^{2} - 2ab + b^{2} \\ (3 - k) = (3)^{2} - 2 \times 3 \times k + (k)^{2} \\ = 9 - 6k + k ^{2}$