Test: Quadratic Functions III - Ambitious

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Question 1:   Are   x=3,x=5   roots of the equation:   x 2 6x+5=0
х=3,x=5
х3,x=5
х=3,x5
х3,x5
Question 2:   Using the Vieta’s formulas find   x 1 x 2   and   x 1 + x 2   for the equation   2 x 2 x+7=0
x 1 x 2 = 1 2 , x 1 + x 2 = 7 2
Cannot be found
x 1 x 2 = 3 2 , x 1 + x 2 = 1 2
x 1 x 2 = 7 2 , x 1 + x 2 = 1 2
Question 3:   Find the value of   x 1 2 x 2 + x 1 x 2 2 =...   without calculating square roots of   x 2 +x56=0
53
56
40
47
Question 4:   Which graph represents the equation   y=3 x 2








Question 5:   Find a square root of the equation based on the graph:

x=0
x=1,x=5
x 1,2 =±5
x=0,x=5
Question 6:   Find a square root of the quadratic equation based on the graph

x 1,2 =±3
х=3
х=0
х=3
Question 7:   What is the quadratic equation of the following graph

x 2 6x=0
x 2 6x+8=0
x 2 4x+8=0
x 2 6x+6=0
Question 8:   Solve the equation   (x6) 2 =9
The equation has no solution.
x 1,2 =±3
x=3,x=0
x=3,x=9
Question 9:   What are the signs of the square roots of a function that corresponds to the below graph:

x 1 <0, x 2 <0
x 1 <0, x 2 >0
x 1 >0, x 2 >0
x 1 >0, x 2 <0
Question 10:   Solve the equation   8 x 2 +6x2=0
x 1,2 =±1
The equation has no solution.
x= 3 4 ,x= 1 4
x=1,x= 1 4