Question

40. Which of the following is one of the roots of
x² – 5x + 4 = 0 ?​

Answer 1

Answer:

this is your answer ............

Answer 2

Answer:

Roots are (x−4)(x−1) or 1,4.

Step-by-step explanation:

B Factorization Method

x²+5x+4  

= ( x² + x + 4x + 4 )

= ( x² + x ) + ( 4x + 4 )

= x ( x + 1 ) + 4 ( x + 1 )

= ( x + 4 ) ( x + 1 )

Now , ( x + 4 ) ( x + 1 ) = 0

=> x + 4 = 0 , or x + 1 = 0

=>x = -4 or x = -1

Thank you !!