Use the quadratic formula to find the roots of 2x^2+7x-5=0.

Question

Give your answers as decimal approximations to the nearest thousandth. Write the decimal approximations for both roots on the same line, separated by a comma.

2x^2+7x-5=0

Answer 1

A=2, B=7, C = -5

[-7 +or- sqrt ( 49 - 4 *2*-5)]/(2*2)

[ -7 +or- sqrt( 49 + 40)]/4 =

[-7 +or- sqrt(89)]/4

0.608 , 4.108