Decide which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring.

−b b^2 − 4ac 2a

Use the part of the quadratic formula that you chose above and find its value, given the following quadratic equation:

2x^2 + 7x + 3 = 0

Numerical Answers Expected!

Question

Decide which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring.

−b     b^2 − 4ac     2a

Use the part of the quadratic formula that you chose above and find its value, given the following quadratic equation:

2x^2 + 7x + 3 = 0 

Numerical Answers Expected!

campbell_st · Answer

b^2 - 4ac   if its positive and a  perfect square, then the quadratic can be factored

campbell_st · Answer

so 

b^2 - 4ac = 49 - 24 = 25  

positive and a perfect square

so the quadratic can be factored

(2x + 1)(x + 3)