Question

Explain how to use the quadratic formula to solve -2x^2+5x=-7

Answer 1

Add seven and the set the equal = to 0. -2 is a, 5 is b, and 7 is c. Just plug them in and solve.

Answer 2

\(\bf -2x^2+5x=-7\implies {\color{blue}{ -2}}x^2{\color{red}{ +5}}x{\color{green}{ +7}}=0\\
\textit{quadratic formula}\\
\qquad
x= \cfrac{ - {\color{red}{ b}} \pm \sqrt { {\color{red}{ b}}^2 -4{\color{blue}{ a}}{\color{green}{ c}}}}{2{\color{blue}{ a}}}\)

Answer 3

Thanks for the answer zynell and jdoe0001. :)

Answer 4

No problem :)