6.

Question

Find the number of real number solutions for the equation.

x2 − 15 = 0

0

1

2

Answer 1

To find the number of real number solutions for the equation $x^2-15=0$, we need to solve for $x$.

The equation can be rewritten as:
$$x^2=15$$

To find the solutions, take the square root of both sides:
$$x=\pm \sqrt{15}$$

This yields two solutions:
$$x=\sqrt{15}$$
$$x=-\sqrt{15}$$

Therefore, there are 2 real number solutions for the equation $x^2-15=0$.

So the correct answer is:
2