Question

A) Find the value of 2x + y when x = 4 and y = 3

b) Find the value of a² + b when a = -2 and b = 5

Answer 1

A=11 B=1

A… 2x+y —> 2(4)+3 —> 8+3=11

B… a(squared)+b —> -2(squared)+5 —> -4+5=1

Answer 2

a.= 2(4)+3
=8+3
=11
b.=(-2) times (-2)+5
=4+5
=9