A certain number squared, plus four times itself is equal to zero.

Which of the following could be that number?

If (x2 + 2) / 2 = (x2 - 6x - 1) / 5, then what is the value of x?

A certain number squared, plus four times itself is equal to zero.

Which of the following could be that number?

If (x2 + 2) / 2 = (x2 - 6x - 1) / 5, then what is the value of x?

7 times a number is 30 less than that same number squared. What is one possible value of the number?

7 times a number is 30 less than that same number squared. What is one possible value of the number?

What is the value of where:

For what value of b is the equation b2 + 6b + 9 = 0 true?

What is the value of where:

For what value of b is the equation b2 + 6b + 9 = 0 true?