Question

Check whether the following are quadratic equations.
x² - 5x + 4 = 0​

Answer 1

Step-by-step explanation:

x2−5x+4=0

⇒ x2−x−4x+4=0

⇒ x(x−1)−4(x−1)=0

⇒ (x−1)(x−4)=0

∴x=1,4