(4+9)^{2} +3^{-2}[/tex]

x =

Step-by-step explanation:

We have the equation: 3 + =

Move the constant (in this case the constant is 3) to the right side of the equation, changing its sign

= - 3

Calculate the difference.

=

Divide.

(when dividing two fractions, you can change it to a multiplication problem by switching the numerator and denominator of the divisor.)

So, we get the equation x which is .

I hope this helps!