Expand and simplify: (x – 5)².
Correct answer(s):
- x² - 10x + 25
Subject
Advanced Mathematics
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Quizzes in Advanced Mathematics for Grade 8
Solve for x: 9x + 7 = 43.
Correct answer(s):
- 4
Add the matrices [[-2, 0], [-4, 5]] and [[-1, 3], [1, 4]].
Correct answer(s):
- [[-3, 3], [-3, 9]]
Simplify √63 as much as possible.
Correct answer(s):
- 3√7
Solve the inequality: 7x + 9 ≤ 37.
Correct answer(s):
- x ≤ 4
If f(x) = -2x + 1, find f(-3).
Correct answer(s):
- 7
Simplify using exponent laws: 2^3 × 2^4.
Correct answer(s):
- 2^7
Solve the inequality: 3x + 7 ≤ 1.
Correct answer(s):
- x ≤ -2
If f(x) = 5x – 6, find f(-2).
Correct answer(s):
- -16
If f(x) = 6x + 9, find f(-1).
Correct answer(s):
- 3
A bag has 6 red, 3 blue, and 2 green marbles. What is the probability of choosing a red marble?
Correct answer(s):
- 6/11
Simplify √468 as much as possible.
Correct answer(s):
- 6√13
If f(x) = 3x – 1, find f(6).
Correct answer(s):
- 17
A student can choose from 4 shirts, 5 pants, and 1 pairs of shoes. How many different outfits are possible?
Correct answer(s):
- 20
Expand and simplify: (x – 2)².
Correct answer(s):
- x² - 4x + 4
The sequence is 3, 5, 7, 9, … . What is the 12th term?
Correct answer(s):
- 25
Factorize: x² – 81.
Correct answer(s):
- (x + 9)(x - 9)
Simplify using exponent laws: 2^9 ÷ 2^1.
Correct answer(s):
- 2^8
If f(x) = -2x – 6, find f(-1).
Correct answer(s):
- -4
Solve the system: 2x + 3y = 12 and 1x – 1y = -4.
Correct answer(s):
- x = 0, y = 4