quadratic equation Flashcards
one variable that is a mathematical sentence of degree 2
What is the example of quadratic equation?
A. x+5x2+3
B. x+5+9x
C. x2+5x+10
C. x2+5x+10
It is a polynomial equation of degree 2
Quadratic Equation
Which of the following is written in the standard form of quadratic equations?
A. 2x2- 3x +7 < 0
B. -x2 + 3x + 3
C. x2 - 8x + 3 = 4
C. x2 - 8x + 3 = 4
In the quadratic equation x2+7x-4 = 0, which is the quadratic term?
A. x2
B. 7x
C. 3x2
A. x2
In the quadratic equation 2x2 - 9x - 5 = 0, which is the linear term?
A. 2x2
B. x2
C. -9x
C. -9x
in the quadratic equation 2x2 - 9x - 5 = 0, which is the constant term?
A. 2x2
B. x2
C. - 5
C. - 5
in the quadratic equation x2+ 8x - 2 = 0, what are the values of a, b, and c?
A. a = 0, b= 3, c = -1
B. a = -3, b = 0, c = -1
C. a = 1, b= 8, c = -2
C. a = 1, b= 8, c = -2
what is the standard form of the quadratic equation 3( x + 2)2 = 2x2 + 3x - 8?
a. 3x2 + 12x + 12 = 0
b. x2 + 9 + 20 = 0
b. x2 + 9 + 20 = 0
in the equation x2 - 18x + 80, what constant do you add to the trinomial to become a perfect square trinomial?
a. 1
b. 81
b. 81
which of the following could be added to make 16x - _______ + 25 = 0 a perfect square trinomial?
a. 40x
b. 80x
a. 40x
which of the following will give the factor of the quadratic equation 9x2 - 4 = 0?
a. (3x + 2)(3x - 2)
b. (3x - 2)(3x - 2)
a. (3x + 2)(3x - 2)
what are the roots of the quadratic equation x2 - 3x - 10 = 0?
a. -10 and 1
b. -2 and 5
b. -2 and 5
the roots of the quadratic equation are -4 and -5. Which of the following quadratic equations have these roots:
a. x2 - 9x + 20 = 0
b. x2 + 9x + 20 = 0
b. x2 + 9x + 20 = 0
Judith is solving the equation x2 - 6x - 41 = 0 by completing the square. Which of the following equations will she arrive at?
a. (x + 3)2 = 50
b. (x - 3)2 = 50
b. (x - 3)2 = 50
one of the roots of 2x2 - 13x + 20 = 0 is 4. What is the other root?
a. 5/2
b. 2/5
a. 5/2
