Question

A² +6²

a-b
if a = 3 and b = 4
Evaluate each expression using the variable replacements.

Answer 1

-45

Explanation:

let a= 3 and b= 4

a² + 6² / a - b

= 3² + 6² / 3 - 4

= 9 + 36 / -1

= 45 / -1

= -45

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Answer 2

Knowing what the variables are means that all we have to do is substitute:
[ ( 3 ) ^2 + ( 4 ) ^2 ] / 4 - 3 =
( 9 + 16 ) / 1 =
25