exam Maths Puzzle Numerical Ability

Dearest tutors.,,, help me with my problem pls!!!
3. One number is 5 greater than another number. If the sum of their squares is 5 times the square of the smaller number, what are the numbers?

Plssss have mercy!!!

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exam Other Question

I am stuck on correct answer for:

If x = 3 and y = -2, then 7x - 3y over 2x + y =

I believe answer is 27 over 4 but I need to verify my work. Can you show me the breakdown to get correct resolve?
anybody know how to simplify this expression?

16x^2 + 8x - 4 OVER 4

or: 16x^2 + 8x - 4 / 4

thanks for your help. I NEED it. :)