Question

x la a 2 + 3 la a 2 = 5 la a 2

Answer 1

$x^{2} + 3^{2} = 5^{2} => x^{2} +9=25=> x^{2} =16=>x=4$

Answer 2

x la a 2 +3 la a 2 = 5 la a 2
x la a 2 +9=25
x la a 2=25-9
x la a 2 = 16
x la a 2= 4 ori 4
x = 4