Which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring?

−b b2 − 4ac 2a

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

2x2 + 7x + 3 = 0

Question

Which part of the quadratic formula tells you whether the quadratic equation can be solved by factoring?

−b             b2 − 4ac            2a

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

2x2 + 7x + 3 = 0

anonymous · Answer

b2 − 4ac 
2x2 + 7x + 3 = 0 
(7)^2-4(2)(3)
49-24
25
as 25 is a perfect square so the quadratic equation can be solved by factorisation

anonymous · Answer

b2-4ac, value here 25

anonymous · Answer

for ax^2+bx+c=0
b^2-4ac is the part that can tell 
7^2-4*2*3 = 25