Question

Solve the following quadratic equation for all values of xx in simplest form.
3, left parenthesis, x, squared, plus, 1, right parenthesis, minus, 5, equals, 7
3(x
2
+1)−5=
7

Answer 1

3(x^2 + 1) − 5 = 7
3x^2 + 3 − 5 = 7
3x^2 − 2 = 7
3x^2 = 9
x^2 = 3
x = ±√3