Test: Quadratic Function I - Ambitious

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Question 1:   Complete the square: x 2 12x+18
( x6 ) 2 12
( x6 ) 2 18
( x6 ) 2 +15
( x6 ) 2 24
Question 2:   Complete the square: 3 x 2 15x+21
3 ( x2.5 ) 2 +3
3 ( x2.5 ) 2 +2.25
3 ( x2 ) 2 +5
3 ( x2.5 ) 2 +1.75
Question 3:   Complete the square: 2 x 2 +7x+13
2 ( x+1.75 ) 2 +6.875
2 ( x+1.5 ) 2 +6.125
2 ( x+1.5 ) 2 +6.25
2 ( x1.75 ) 2 +6.75
Question 4:   Find the sum of the roots of the quadratic equation: x 2 15x+2.5=0
5
3
15
15
Question 5:   Find the sum of the roots of the periodic equation: 3 x 2 4x+5=0
4
2 1 3
there are no roots
4
Question 6:   Find the product of the roots of a quadratic equation: x 2 17x+23=0
23
17
23
11.5
Question 7:   Find the product of the roots of a quadratic equation: 7 x 2 +2x+21=0
3
7
21
21
Question 8:   Solve the quadratic equation: 7 x 2 +2x+21=0
{ x 1 =2 x 2 =3
{ x 1 =1 x 2 =2
{ x 1 =1 x 2 =4
{ x 1 =2 1 2 x 2 =5 1 2
Question 9:   Solve the quadratic equation: 2 x 2 +7x+6=0
{ x 1 =3 x 2 =1
{ x 1 =2 x 2 =1 1 2
{ x 1 =2 x 2 = 1 3
{ x 1 =1 x 2 =1
Question 10:   Solve the quadratic equation:
{ x 1 =2.18 x 2 =28.43
{ x 1 =2.33 x 2 =24.66
{ x 1 =0.66 x 2 =48.66
{ x 1 =1.15 x 2 =38.22