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ollegr [7]
3 years ago
11

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

Mathematics
2 answers:
damaskus [11]3 years ago
8 0

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.

Serjik [45]3 years ago
5 0

Answer:

21

Step-by-step explanation:

<u>Step 1:  Set a to 4 and b to 5</u>

<u />b^2-a

(5)^2-(4)

25-4

21

Answer:  21

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