Question

What is the value of 5a2−2(a+b) when a=−112 and b = 2?

Enter your answer as a simplified mixed number in the box.

Answer 1

The answer is a= -53.5

Answer 2

5(a)2-2(a+b)
=5(112)2-2(112+2)
=5(12544)-2(114)
=62720-228
=62492

That is if i take the 2 after the 5(a) as squared