0=-x^2 + .21x + 50?

Science & Mathematics by Anonymous 2018-05-25 11:04:56

Social Science

0=-x^2 + .21x + 50?

3 answers

Anonymous

The roots are 7.1765 and -6.9665
Anonymous

0 = -x^2 + 0.21x + 50 x^2 - 0.21x - 50 = 0 Solutions: x ≈ -6.96685 x ≈ 7.17685
Anonymous

x = (-0.21 +/- sqrt(0.21^2 - 4(-1)(50))) / (2(-1)) x = (-0.21 +/- sqrt(0.0441 + 200)) / (-2) x = (-0.21 +/- sqrt(200.0441)) / (-2) x = 0.105 +/- sqrt(50.011025) x =~ 7.1768473541218351158987103473991 or -6.9668473541218351158987103473991