Question

look i need an answer!

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

Answer 1

b^2-4ac
if it is a perfect square, then the problem can be solved by factorisation

Answer 2

so is it 5 ?

Answer 3

nope.
b=7,a=2,c=3
calculate again

Answer 4

its 25

Answer 5

\[\sqrt{7^2-4(2)(3)}=\sqrt{49-24}=\sqrt{25}\]

Answer 6

so it is 5...

Answer 7

oh sorry

Answer 8

25 is correct.