Choose one answer and explain why. Each question has one choice mark and one explanation mark. Explanations are saved in this browser and require review.
How to enter an exact answer
Use sqrt(5), 3/2 and x^2. For roots: -7, 4. For intervals: (-inf,2] U (5,inf), or 2 < x < 5. For no solutions: empty. For pairs: (1,3); (3,-1). Keep each pair together. For completed squares, enter the three labelled parts of \(a(x-h)^2+k\). Factor fields take two factors separated by a semicolon.