Question

Evaluate (a - 4b)2 + 2a if a = 15 and b = 3.

Answer 1

Answer: 96

Explanation:

Plug in a and b. so, (15-4(3))2+2(15). so (15-12)2+30. (3)32. Answer is 96.

Answer 2

9

Explanation:

(a-b)^2=a^2-2ab+b^2

(15-12)^2=9