Work on paper, then enter every mathematical conclusion. Written methods, explanations and sketches are reviewed separately.
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.