Question

Solve the equation 4c2 + 7c – 5 = 0 using the quadratic formfoula

Answer 1

4c² + 7c - 5 = 0

c = (-7 ± √(7² - 4(4)(-5)))/(2(4))

= (-7 ± √(49 + 80))/8

= (-7 ± √129)/8