Test: Quadratic Equations II - Challenging

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Question 1:   Solve: x 2 x30=0
x=5 or x=6
x= 1 2 or x=60
x=6 or x=3
x=3 or x=10
Question 2:   Solve: x 2 8 1 2 x+4=0
x=4 or x=1
x=8 or x= 1 2
x=2
x=16 or x= 1 4
Question 3:   Solve: x 2 4 1 6 x1 1 2 =0
x=6 or x= 1 4
x=4 1 2 or x= 1 3
x=7 2 3 or x= 1 6
x=3 or x= 1 2
Question 4:   Solve: 6 x 2 5x6=0
x= 3 4 or x=1 1 3
x= 9 6 or x=6
x=2 or x=3
x=1 1 2 or x= 2 3
Question 5:   Solve: 6 x 2 7x20=0
x=4 or x=5
x=1 1 2 or x=2 2 3
x=2 1 2 or x=1 1 3
x=3 3 4 or x= 2 3
Question 6:   Solve: 12 x 2 + 1 6 x 1 6 =0
x= 1 3 or x= 1 4
x= 1 7 or x= 1 6
x= 1 9 or x= 1 8
x= 1 2 or x= 1 3
Question 7:   Solve: 10x 1 5x +1=0
x= 1 3 or x= 2 5
x= 1 5 or x= 1 10
x=1 or x= 1 5
x= 1 4 or x= 1 5
Question 8:   Solve: 2x 2 x 3=0
x= 1 2 or x=2
x=1 or x=1
x= 1 4 or x=4
x=1 or x=2
Question 9:   Solve: 4 x 2 13x+3=0
x=3 or x= 1 4
x=2 or x= 1 3
x=1 or x=2
x=1 or x=3
Question 10:   Solve: 7 x 2 x 2 7 =0
x=14 or x= 1 7
x=7 or x= 1 14
x= 2 7 or x= 1 7
x= 3 14 or x= 4 7