Question

The sum of the square of a positive number and the square of 2 more than the number is 130. What is the number?

Answer 1

where are you stuck?

Answer 2

From the beginning

Answer 3

Let the positive number = x

The question is: The sum of the square of a positive number and the square of 2 more than the number is 130.

What is the square of the positive number? It is \(x^2\)
What is the square of 2 more than the number? It'd be \((x+2)^2\)

The question says, their sum equals 130. Read it once again. Slowly and Carefully. :)

So, we get this final equation: \(x^2 + (x+2)^2 = 130\)

Can you solve it now? :)