Question

If 5 is added to the square of a number, the result is 30. Find all such numbers,

Answer 1

Answer:

5, -5

Step-by-step explanation:

We have the problem x^2+5=30

Same to both sides

x^2=25

And 25 is a perfect square, x = 5

BUUUUUUUT..........

x could also equal to -5 because no numbers that are squared can be negative

Confused?

Squaring a number means doing the number multiplied by itself

A negative multiplied by a negative equals a positive

A positive multiplied by a positive equals a positive

Under no circumstances can something squared be a negative number

-5*-5 also equals 25.

So those are your two numbers

Let me know if you have any questions

Answer 2

should be -5,-5 have agreat day!!