Question

5. One number is 7 more than another and its square is 77 more than the square of the smaller number.
What are the numbers?
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Answer 1

Answer:

Let x be the smaller number

Let x + 7 be the larger number

(x + 7)2 = 2x + 77

2x + 14x + 49 = 2x + 77

14x = 28

x = 2

x + 7 = 9