Question

Use the Quadratic Formula to solve the equation.
2x^2 -7x-5=0

Answer 1

Start by listing your abc values

Answer 2

ax^2+bx+c=0

Answer 3

formula is:
\[\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\]

Answer 4

a=2 b=7 c=5

Answer 5

b and c have wrong sign

Answer 6

b=-7 c=-5 ?

Answer 7

good.

Answer 8

yes

now substitute all this into the formula

Answer 9

\[y=\frac{ -b \pm \sqrt{b^2-4ac} }{ 2a }\]

Answer 10

Note that this produces two results (roots).