What is the first step in solving a quadratic equation by equating brackets to zero?

Quadratic Equations and Inequalities

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Mathematics
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9th - 10th Grade
•
Hard

Thomas White
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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Expand the brackets
Set each bracket equal to zero
Multiply the brackets
Add the brackets
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If 3x + 4 = 0, what is the value of x?
-3/4
-4/3
4/3
3/4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which method can be used to solve a quadratic equation to two decimal places?
Quadratic formula
Graphical method
Substitution
Trial and error
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the quadratic formula used for solving equations?
x = b ± √(b² + 4ac) / 2a
x = b ± √(b² - 4ac) / 2a
x = -b ± √(b² - 4ac) / 2a
x = -b ± √(b² + 4ac) / 2a
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you test if a solution is valid for an equation involving square roots?
Confirm the solution is a fraction
Verify the solution is an integer
Ensure the solution is positive
Check if both sides are equal after substitution
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of squaring both sides of the equation √(2x + 7) = 4 - x?
2x + 7 = 16 - 8x + x²
2x + 7 = 4 - x
2x + 7 = 16 - x
2x + 7 = (4 - x)²
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the graphical method used for solving quadratic inequalities?
Graphical method
Number line
Substitution method
Algebraic method
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