College Math Certification Exam Tests

College Math Practice Test 92

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The MCQ Quiz: *Roots of the quadratic equation ax² + bx + c = 0 are imaginary and unequal if*; "Nature of roots of quadratic equation" App APK Download (Free) with answers b² - 4ac > 0, b² - 4ac = 0, b² - 4ac < 0 to study online training courses. Study quadratic equations questions and answers, Apple Book to download free sample for best SAT prep courses online.

**MCQ 456**: The roots of the quadratic equation ax² + bx + c = 0 are imaginary and unequal if

- b² - 4ac = 0
- b² - 4ac > 0
- b² - 4ac < 0
- None of Above

c

**MCQ 457**: N(n-1)/3.2.1 =

- (n-2)ι/3ιnι
- nι/3ι(n-2)ι
- 3ι(n-2)ι/nι
- nι

b

**MCQ 458**: A semi group is always a

- A group
- commutative group
- a non abelian group
- groupoid

d

**MCQ 459**: If ƒ(x) = tan^{-1}(x²/2), then f^{-1}(π/4) =

- 0
- 1
- √2
- 2

c

**MCQ 460**: If ƒ(x) = x^{4} -4x² +4, then ƒ(√(x+1) =

- x-1
- (x-1)²
- x² -1
- x² +1

b

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