Test: Quadratic Function I - Ambitious

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Question 1:   Complete the square: x 2 12x+18
( x6 ) 2 +15
( x6 ) 2 24
( x6 ) 2 12
( x6 ) 2 18
Question 2:   Complete the square: 3 x 2 15x+21
3 ( x2 ) 2 +5
3 ( x2.5 ) 2 +1.75
3 ( x2.5 ) 2 +3
3 ( x2.5 ) 2 +2.25
Question 3:   Complete the square: 2 x 2 +7x+13
2 ( x+1.5 ) 2 +6.125
2 ( x+1.5 ) 2 +6.25
2 ( x+1.75 ) 2 +6.875
2 ( x1.75 ) 2 +6.75
Question 4:   Find the sum of the roots of the quadratic equation: x 2 15x+2.5=0
15
15
5
3
Question 5:   Find the sum of the roots of the periodic equation: 3 x 2 4x+5=0
4
2 1 3
4
1 1 3
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