Answer:
4 square root 5 is the answer
root(20*4)
2 × root(5×4)
4×root(5)
(X- 3)² - 0
(X - 3 )( X - 3 )
x² + 9 - 6x
x² - 6x + 9
a = 1
b = -6
c = 9
4/9 as a decimal is 0.4 repeated because four divided by 9 is 0.4 repeated
