Question

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

Answer 1

if a = 4 & b = 5 then we plug this in the expression; (5) • 2 - (4)
using PEMDAS we solve the 5• 2 first
10 - 4
6 is the answer!
hope this helps :)