Question

Find the value of the expression.
b2 − a
for a = 4 and b = 5

Answer 1

Answer: 21

Step-by-step explanation: To solve this problem we will substitute b to equal 5 and a to equal 4.

b2 - a

Plug in the values for b and a

5^2 - 4 (Solve 5^2 5 x 5 = 25)

25 - 4 (Subtract)

21 is the value of the expression.

Answer 2

`21`

Explanation:

Step 1: Set a to 4 and b to 5

`b^2-a`

`(5)^2-(4)`

`25-4`

`21`

Answer:
`21`