Question

x square - 9 x + 20 =0​

Answer 1

x²-9x+20=0

x²-4x-5x+20=0

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

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

x=5. x=4

Answer 2

Explanation :-

x ² - 9 x + 20 = 0

x² - ( 4 + 5 ) x + 20 = 0

x ² - 4x - 5x + 20 = 0

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

( x - 4 ) ( x - 5 )

x - 4 = 0 Or x - 5 = 0

x = 4 x = 5