Question

When simplifying the quadratic formula to solve the equation x 2 + 6x - 55 = 0, the number under the radical sign will be:

-184
232
256

Answer 1

Answer: 256

Explanation:

x² + 6x - 55 = 0

The values under the radical are: b² - 4ac

(6)² - (4)(1)(-55)

= 36 - (-220)

= 36 + 220

= 256