if u can slove this do these three problems
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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