Use the quadratic formula to solve the quadratic equation. Approximate the solutions to the nearest tenth.
-$m ^ { 2 } = 7 m - 4$
A)-0.5, 7.5
B)1.3, 12.7
C)0.6, 6.4
D)-6.4, -0.6

Question

Quizplus · Accepted Answer

Rearrange the equation to $m^2 - 7m + 4 = 0$. Using the quadratic formula $m = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$, where $a = 1$, $b = -7$, and $c = 4$, the solutions are approximately $m = 0.6$ and $m = 6.4$.

Use the Quadratic Formula to Solve the Quadratic Equation m2=7m−4m ^ { 2 } = 7 m - 4m2=7m−4

Use the Quadratic Formula to Solve the Quadratic Equation $m ^ { 2 } = 7 m - 4$