Algebra Fundamentals Flashcards
6 cards from real ALEKS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Algebra Fundamentals flashcards as text
Simplify: (3x²y)(4xy³)
Answer: 12x³y⁴
Multiply coefficients and add exponents: 3×4 = 12, x^(2+1) = x³, y^(1+3) = y⁴.
What is the domain of f(x) = √(x - 4)?
Answer: x ≥ 4
The expression under a square root must be non-negative: x - 4 ≥ 0, so x ≥ 4.
Solve: |2x - 6| = 10
Answer: x = 8 or x = -2
Set 2x - 6 = 10 (x = 8) and 2x - 6 = -10 (x = -2).
What is the y-intercept of the line 4x - 2y = 8?
Answer: -4
Set x = 0: -2y = 8, so y = -4; the y-intercept is -4.
Simplify: (x³)⁴
Answer: x¹²
When raising a power to a power, multiply the exponents: (x³)⁴ = x^(3×4) = x¹².
What is the x-intercept of y = 3x - 9?
Answer: (3, 0)
Set y = 0: 3x - 9 = 0, so x = 3; the x-intercept is (3, 0).