Question

if u can slove this do these three problems

Answer 1

a quadratic equation is written as

x^2 - (a+b)x + (ab)

so,

28. let a = 3 , b = -3

equation would be

x^2 - ( 3 + ( -3) ) x + 3X(-3)

x^2 - 9 = 0 option 3 is correct

29. let a = root 2 and b = 2 root 2

x^2 - ( root 2 + 2 root 2 ) x + root 2 X 2 root 2

x^2 - 3 root 2 x + 4 = 0 option 1 is correct

30. let a = 3 + root 3 b = 3 - root 3

x^2 - ( 3 + root 3 +3 - root 3 )x + 3 + root 3 X 3 - root 3

x^2 - 6x + 6 = 0 option 2 is correct