Question

2r² +23r+56=0
Solve by factoring

Answer 1

Use the quadratic eqation:

-B +/-
`\sqrt{B^(2)-4AC }`/2A

-23 +/-
`\sqrt{23^(2) -(4 )(2)(56) }`/ (2) (2)

-23 +/- 9/4

Two roots are:

-23 + 9/4 = -7/2

and

-23- 9/4 = -8

Answer 2

mid-term factorization