Question

Evaluate the expression for a = 5 and b = 12.

b^2 – 4a

A.
700

B.
100

C.
124

D.
4

Answer 1

the answer is c
(12^2)- (4x5)
=124

Answer 2

Given

d = b² -4a

a = 5, b=12

Find

the value of d

Solution

Put the numbers where the corresponding letters are, then do the arithmetic.

d = 12² - 4·5

d = 144 - 20

d = 124

The appropriate choice is ...

... C. 124