You may write them separating the units and tens digits, and then use FOIL to add 4 easy tems. For example, let's compute
:

Answer:
5and 3/4
Step-by-step explanation:
Make 5 a fraction to 5/1
If there are choices, then you need to choose the correct choice, but if there are no choices, then one correct answer is to multiply the first equation by -2 and add it to the second equation to eliminate x and solve for y.
It would be (x+2)(x+2) factored
and use the distribution property if u want to solve it
x^2+2x+2x+4
=x^2+4x+4
Your answer is C. Because 40in is 3ft 4in 37in is 3ft 1in 41in is 3ft 5in