Test: Quadratic Equations I - Ambitious

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Question 1:   Solve: x 2 =16
x=2,x=8
x=4,x=0
x=4,x=0
x=4,x=4
Question 2:   Solve: x 2 7x=0
{ x=1 x=7
{ x=1 x=7
{ x=0 x=7
{ x=0 x=7
Question 3:   Solve: x 2 +7x+10=0
{ x=2 x=5
{ x=2 x=5
{ x=2 x=5
{ x=2 x=5
Question 4:   Solve: x+9+ 20 x =0
{ x=4 x=5
{ x=4 x=5
{ x=4 x=5
{ x=4 x=5
Question 5:   Solve: 3 x 2 16=0
{ x= 4 3 3 x= 4 3 3
{ x= 4 3 3 x= 3
{ x= 4 3 3 x=4 3
{ x=4 3 x=4 3
Question 6:   Solve: x 2 +5=0
x=2.5
No real roots
x= 5
x= 5
Question 7:   Complete the square: 3 x 2 2x+3
3 ( x2 ) 2 +4
3 ( x+ 1 3 ) 2 2 3
3 ( x 1 3 ) 2 +2 2 3
3 ( x1 ) 2 +2
Question 8:   Complete the square: 2 x 2 +3x+5
2 ( x+ 1 2 ) 2 4 1 8
2 ( x+ 1 4 ) 2 +3 3 4
( x+ 3 4 ) 2 +4 1 8
2 ( x+ 3 4 ) 2 +3 7 8
Question 9:   Solve by completing the square: 2 x 2 4x1=0
{ x= 3 2 1 x= 3 2 1
{ x= 3 2 x= 3 2
{ x=2.5 x=0.5
{ x= 3 2 +1 x= 3 2 +1
Question 10:   Solve by completing the square: 3 x 2 7x5=0
{ x=3 x= 5 6
{ x= 109 6 + 7 6 x= 109 6 + 7 6
{ x= 116 6 x= 102 6
{ x= 29 6 + 2 3 x= 29 6 + 2 3