Question

Use the quadratic formula to solve the equation. If necessary, round answers to the nearest hundredth.

5x2 + 16x – 84 = 0

Answer 1

\[\huge\ x =\frac{ -b \pm \sqrt{b^2 -4ac} }{ 2a }\]
this is quadratic formula

Answer 2

\[Ax^2+Bx+C=0\]this is quadratic equation
now replace a b and c by their values that you have inthe equation

Answer 3

now replace