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Simplify √112 as much as possible.
Correct answer(s):
- 4√7
Which of the following numbers are prime numbers? Select all correct answers.
Correct answer(s):
- 2
- 3
- 5
Let A = {1, 5, 11, 12, 13} and B = {3, 6, 8, 10, 11}. What is A ∪ B?
Correct answer(s):
- {1, 3, 5, 6, 8, 10, 11, 12, 13}
Expand and simplify: (x + 1)².
Correct answer(s):
- x² + 2x + 1
Expand and simplify: (x – 8)².
Correct answer(s):
- x² - 16x + 64
In a class of 36 students, 17 study only Algebra, 9 study only Geometry, and 6 study both. How many study Algebra or Geometry?
Correct answer(s):
- 32
Simplify √468 as much as possible.
Correct answer(s):
- 6√13
If f(x) = 6x + 9, find f(-1).
Correct answer(s):
- 3
Solve the inequality: 3x + 7 ≤ 1.
Correct answer(s):
- x ≤ -2
Simplify using exponent laws: 2^3 × 2^4.
Correct answer(s):
- 2^7
If f(x) = -2x + 1, find f(-3).
Correct answer(s):
- 7
Which statement is true for the number 12?
Correct answer(s):
- 12 is even and divisible by 3
Solve for x: 8x – 3 = -35.
Correct answer(s):
- -4
Find the range of the data set: 11, 15, 16, 22, 28.
Correct answer(s):
- 17
Solve the system: 2x + 3y = 12 and 1x – 1y = -4.
Correct answer(s):
- x = 0, y = 4
If f(x) = -2x – 6, find f(-1).
Correct answer(s):
- -4
Simplify using exponent laws: 2^9 ÷ 2^1.
Correct answer(s):
- 2^8
Factorize: x² – 81.
Correct answer(s):
- (x + 9)(x - 9)
The sequence is 3, 5, 7, 9, … . What is the 12th term?
Correct answer(s):
- 25
Expand and simplify: (x – 2)².
Correct answer(s):
- x² - 4x + 4