Question

julien is solving x² - 4 = 0. he finds that the roots of the quadratic equation are x = ±2. does the graph of the parabola described by this equation cross the x - axis? explain.

Explanation:

Answer:

Yes, because the roots \(x = \pm2\) are the x - intercepts of the graph of the parabola \(y=x^{2}-4\), which means the graph crosses the x - axis at \(x = 2\) and \(x=-2\).