Question

Use the quadratic formula to solve for x. 8x² +7x+1=0

Round your answer to the nearest hundredth.
If there is more than one solution, separate them with commas.​

Answer 1

x = -.18 or x = -.70

Explanation:

general form of quadratic equation is, ax² + bx + c = 0

given is, 8x² + 7x + 1 = 0

where, a = 8

b = 7

c = 1

quadratic formula is, x = -b ± √b² - 4ac / 2a

= -7 ± √7² - 4(8)(1) / 2(8)

= -7 ± √49 - 32 / 16

= -7 ± √17 / 16

= -7 ± 4.12 / 16

= -7 + 4.12 / 16, -7 - 4.12 / 16

= -2.88/16, -11.12/16

= -.18, -.70