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Quadratic Equation Part 2
Quiz by Angkol
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What is a discriminant?
How do we get the discriminant of quadratic equations?
What is the nature of roots if the discriminant is -5?
What is the discriminant of the quadratic equation 3x2 – 2x + 5 = 0?
Your classmate says that the quadratic equation 2x2 + 5x – 5 = 0 has two rational and unequal roots because the value of its discriminant is positive. Do you agree with your classmate?
How do we get the sum of the roots of quadratic equations?
How do we get the product of quadratic equations?
What is the sum of the roots of 4x2 –100 = 0?
Your classmate says that the standard form of the quadratic given the roots -3 and15 is quadratic x2 + 12x – 45=0. Do you agree with your classmate?
What do you call to a solution of an equation derived from an original equation, however not a solution of the original equation?
Which of the following rational algebraic equations is transformable into a quadratic equation?
What is the standard form of equation x(x+2) +2(x-2) = 1 when transformed to a quadratic equation?
Which of the following is a solution of (x + 3)(x + 4) = 20?
Below is the solution of your classmate when asked to solve the equation (2n+3)2+(n+4)2=10. If you are going to evaluate your classmate’s answer, is he/she correct? If not, in what step is he/she mistaken?
             STEP1:                  (2n+3)2+(n+4)2=10  Â
                       STEP 2:         (4n2 + 12n + 9)  + (n2 + 8n + 16) =10
                       STEP 3:          5n2 +20n + 25 = 10 Â
                       STEP 4:                   5n2 +20n + 15 = 0   Â
                       STEP 5:          (5n + 3)(n + 5) = 0 Â
                       STEP 6:          5n + 3 = 0  ; n + 5 = 0
                       STEP 7:           n=-3/5 ; n=-5
If you are given the problem: The square of the price of a doll diminished by the price itself is PhP 56.00, what will be your initial equation to represent the problem?
What is the standard form of the quadratic equation 3x(2 - x) = 4?
What are the values of a, b and c of the equation (m - 3)(m + 1) = 2
What is/are the real root/s of the equation x(4x - 12) = 0?