Mathematics
NtsBase
4

Solve x2 + 9x + 9 = 0

+0
(2) Answers
Yaree

x^2 +9x +9 =0  Discriminant = 81-36 = 45 x_1,2 = (-9 +/- sqrt45)/2 = (-9 +/- 3sqrt5)/2 x_1,2 = (-9 +/- 3sqrt5)/2 hope helped 

ElizbethLiddle208

This equation can be solved using the quadratic equation. In this case, let A be 1, B be 9 and C be 9. Apply the quadratic formula :                -9 ± √ 45     x  =    —————                     2 The two answers of this equation are: 1. x =(-9-√45)/2=(-9-3√ 5 )/2= -7.854  2. x =(-9+√45)/2=(-9+3√ 5 )/2= -1.146

Add answer