Solve the equation using the quadratic formula (if necessary, round your result to three significant digits and decide which number is smaller or larger x value).

Question

Solve the equation using the quadratic formula (if necessary, round your result to three significant digits and decide which number is smaller or larger x value).
2x^2 + x − 7 = 0

I used the quadratic formula and I got -2.13 as a smaller x-value and 1.6 as larger x-value.

anonymous · Answer

I got both answers wrong.

Reiny · Answer

It asked for 3 significant digits, so your answers from the calculation are probably 1.63745... and -2.13745... So for the accuracy asked for, try 1.64 and -2.14