How to solve x square + 3x-100 = 0?

How to solve x square + 3x-100 = 0?

Using the formula: x square + 3x-100 = 0, x = (- 3 ± √ (9 + 400)) / 2 x = (- 3 ± √ 409) / 2 pro, your adoption is my driving force,