Quadratic Equations and Solving Quadratic Equations

Quiz by Angkol

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### Measures 1 skill fromGrade 9MathematicsPhilippines Curriculum: Grades K-10 (MELC)

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- Q1
Which of the following is a quadratic equation?

$x^3-\backslash \; 2x\backslash \; +\backslash \; 1\backslash \; =\backslash \; 0$

$x\backslash \; =\backslash \; 3$

$2-x^2=0$

^{}$x\backslash \; -\backslash \; 2\backslash \; =\backslash \; 0$

30sM9AL-Ia-1 - Q2
What is the standard form of the equation 4x = 3x

^{2}– 2?$3x^2+4x\backslash \; -2\backslash \; =\backslash \; 0$

$3x^2-4x\backslash \; -2=0$

$3x^2\backslash \; +\backslash \; 4x\backslash \; +\backslash \; 2\backslash \; =\backslash \; 0$

$3x^2-4x\backslash \; +\backslash \; 2\backslash \; =\backslash \; 0$

30s - Q330s
- Q4
Which of the following is NOT a method of solving quadratic equations?

Factoring

Quadratic Surd

Quadratic Formula

Completing the square

30s - Q5
In any quadratic equations, how many possible roots are there?

Infinite

0

2

1

30s - Q6
How many possible real roots are therein the equation x

^{2}= k, where k < 0?1

2

0

Infinite

30s - Q7
Which of the following is the quadratic formula?

$x=\backslash frac\{-b\backslash pm\backslash sqrt\{b^2-4ac\}\}\{2a\}$

$x=\backslash frac\{-b\backslash pm\backslash sqrt\{b^2\}-2ac\}\{2a\}$

$x=\backslash frac\{b\backslash pm\backslash sqrt\{b^2-4ac\}\}\{2a\}$

$x=\backslash frac\{-b\backslash pm\backslash sqrt\{b^2-4ac\}\}\{2\}$

30s - Q8
What property states that “If the product of two numbers is zero, then either of the two is equal to zero or both numbers are equal to zero.”?

Zero product property

Inverse Property

Identity Property

Reflexive Property

30s - Q9
is the most appropriate method to use in solving the equation x

^{2}= k, where k>0?Completing the square

Quadratic Surd

Factoring

Extracting the Square root

30s - Q10
In completing the square, what happens to the equation when both sides are added by square of one-half of the coefficient of x?

It becomes perfect square trinomial

It becomes, sum and difference of two squares

It becomes perfect square

It becomes perfect square binomial

30s