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- 1. Multiple Choice
The discriminant is...
ax2 + bx + c
b2 + 4ac
b2 - 4ac
b - 4ac
- 2. Multiple Choice
If the discriminant is equal to -7 the roots will be...
unequal and imaginary
equal and real
unequal, real and rational
unequal, real and irrational
- 3. Multiple Choice
If the discriminant is equal to 0 the roots will be...
unequal and imaginary
equal and real
unequal, real and rational
unequal, real and irrational
- 4. Multiple Choice
If the discriminant is equal to 49 the roots will be...
unequal and imaginary
equal and real
unequal, real and rational
unequal, real and irrational
- 5. Multiple Choice
The roots of x2 + 3x - 1 = 0 will be
unequal and imaginary
equal and real
unequal, real and rational
unequal, real and irrational
- 6. Multiple Choice
The roots of 4x2 - 1 = 0 will be
unequal and imaginary
equal and real
unequal, real and rational
unequal, real and irrational
- 7. Multiple Choice
An equation will have unequal, real and irrational roots if...
D = 0
D > 0 and is a perfect square
D > 0 and is NOT a perfect square
D < 0
- 8. Multiple Choice
The roots of 2x2 + 9x = -4 will be will be
unequal and imaginary
equal and real
unequal, real and rational
unequal, real and irrational
- 9. Multiple Choice
The roots of x2 + 12x = 2x - 25 will be
unequal and imaginary
equal and real
unequal, real and rational
unequal, real and irrational
- 10. Multiple Choice
Determine the value of the discriminant and name the nature of the solution for the following:
x2 + 2x - 63 = 0
256 - 2 unequal, real and rational roots
√(-256) - 2 unequal and imaginary
√(137) - 2 unequal, real and irrational
123 - 2 unequal, real and rational
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