Question

Find the roots by factorisation xsquare-9x-220=0​

Answer 1

Answer:

Roots will be : - 11 and 20

Step-by-step explanation:

x² - 9x - 220 = 0

x² - 20x + 11x - 220 = 0

x(x - 20) + 11(x - 20) = 0

(x + 11)(x - 20) = 0

Now,

x + 11 = 0 _______ x = - 11

OR

x - 20 = 0 ______ x = 20