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

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

BT

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

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!