Question

2. which of the following are the roots of quadratic equation by factorization
x^2-9x+ 20 = 0
O 3,4
O 4,5
w
O 5,6
O 6,7​

Answer 1

Answer:

(b) 4, 5

Step-by-step explanation:

x² - 9x + 20 = 0

x² - 5x - 4x + 20 = 0

x(x - 5) - 4(x - 5) = 0

(x - 4)(x - 5) = 0

x = 4, 5

roots of this equation are 4, 5

Answer 2

Answer:

4,5 is correct answer

Step-by-step explanation:

x^2-5x-4x+20

=x (x-5)-4 (x-5)

=(x-4) and (x-5)

i.e.x=4 and x=5