Question

x*2 - 2x -8 =0 find roots​

Answer 1

Answer:

Step-by-step explanation:

Given that,

Let p (x) = x² - 2x - 8 = 0

⇒ x² - 4x + 2x - 8 = 0 ( ∵ -4 × 2 = - 8 , -4+2 = -2 )

⇒ x ( x - 4 ) + 2 ( x - 4 ) = 0

⇒ ( x - 4 ) ( x + 2 ) = 0

⇒ x -4 = 0 and x + 2 = 0

⇒ x = 4 and x = - 2

∴ The roots of the equation is 4 and - 2.