Question

20.The roots of the Q. equation x2/9-4=0 is​

Answer 1

Answer:

x² - 4=0

9

x²-54 = 0

9

x²-54=0×9

x²-54=0

a=1

b=0

c=-54

D=b²-4ac

D=0-4(1)(-54)

D=54

x=-b+√D. x=-b-√D

2a 2a

x=0+√54 x=0-√54

2(1). 2(1)

x=3√6 x=-3√6

2 2

Answer 2

Answer:

+6 or -6

Step-by-step explanation:

x2/9-4=0

x2-36=0

x2 = 36

x = +6 or -6