First 15 Nov 13
Flashcard
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the result of multiplying the complex numbers (4 – 3i) and (-7 – 2i)?
Back
-34 + 13i
2.
FLASHCARD QUESTION
Front
How do you find the intersection points of the equations y = x^2 - 4x + 6 and y = x + 2?
Back
Set the equations equal to each other and solve for x: (1, 3) and (4, 6).
3.
FLASHCARD QUESTION
Front
What is a perfect square trinomial?
Back
A perfect square trinomial is a quadratic expression that can be factored into the square of a binomial, such as x^2 + 16x + 64.
4.
FLASHCARD QUESTION
Front
How do you factor the expression x^2 + 18x + 81?
Back
It factors to (x + 9)^2.
5.
FLASHCARD QUESTION
Front
What is the method to solve a system of linear and quadratic equations?
Back
Substitute the linear equation into the quadratic equation and solve for the variable.
6.
FLASHCARD QUESTION
Front
What is the standard form of a quadratic equation?
Back
The standard form is y = ax^2 + bx + c.
7.
FLASHCARD QUESTION
Front
What does the discriminant of a quadratic equation tell you?
Back
The discriminant (b^2 - 4ac) indicates the nature of the roots: if positive, two real roots; if zero, one real root; if negative, no real roots.
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