Question

What method would you choose to solve the

equation 2x^2- 7 = 9? Explain
method.
why you chose this

Answer 1

`{ \rm{ {2x}^(2) - 7 = 9}} \\ { \rm{ {2x}^(2) = 9 + 7 }} \\ { \rm{ {2x}^(2) = 16}} \\ { \rm{ {x}^(2) = 8 }} \\ { \rm{ \sqrt{ {x}^(2) } } = √(8) } \\ { \rm{x = √(4) } * √(2) } \\ { \rm{x = 2 √(2) }}`

Answer 2

Quadratic formula using roots to solve for x gives you two values of x