Question

Find the solutions to x2 = 28.

A. x = 14,2
O B. x = +2./14
O C. X = +2,7
O D. x = -7/2

Answer 1

Answer:
`x = \pm2√(7)\\\\`

Work Shown:

`x^2 = 28\\\\x = \pm√(28)\\\\x = \pm√(4*7)\\\\x = \pm√(4)*√(7)\\\\x = \pm2√(7)\\\\`

This can be rewritten into
`x = 2√(7) \ \text{ or } \ x = -2√(7)`