Explicit Quadratic Equations

The solutions of the quadratic equation
x²-5x+6=0 are

• x=1 or x=-6
• x=3 or x=2
• x=-3 or x= 2
• x=-1 or x=6

To complete the perfect square trinomial in the expression x²-22x+_____, we need to add

• 11
• 44
• 121
• 144

In the quadratic formula, the expression
b²-4ac is called

• discrim
• determinant
• discriminant
• none of these

In the expression 4x²-5x+9 the leading coefficient is

• 9
• -5
• -4
• 4

The solution of the quadratic equation
4x²-5x-9=0 are

• x=-1 or x=9/4
• x=1 or x=9/4
• x=2 or x=3
• x=-2 or x=-3

If 3+2i is a solution of a quadratic equation, then other solution of this quadratic equation is

• 2-3i
• 3+2i
• 1/3 -1/2i
• 3-2i

One solution of the quadratic equation
x²-7x+12=0 is

• x=3
• x=2
• x=-3
• x=-2

The graph of a quadratic function is called

• a line
• a hyperbola
• a parabola
• a cubic

Standard form of a quadratic equation

• y=x²
• y=ax²+bx+c
• y=mx+b
• y=x

Which of the following is NOT a quadratic function

• f(x) = -3x²
• f(x) = -5x - x²
• y = 3x³ - 4x + 5
• A = pi.r²