Question

Which of the following equations is quadratic? (a) x1x² + 1) = 0

(b) 5(4x + 2) = 3
(c) (x+3)(x + 4) = 5​

Answer 1

(c) (x+3)(x+4)=5

Explanation:

It's in factored form, and you would use the method of finding the perfect square to get the equation set to zero and find the solutions.