math 8

what is rational algebraic expressions?

• Rational algebraic expressions are always integers.
• Rational algebraic expressions cannot be simplified.
• Rational algebraic expressions are only defined for whole numbers.
• Rational algebraic expressions are ratios of two polynomials.

what is the factor of 4f-16?

• 4(f - 4)
• f(f - 4)
• 4(f + 4)
• 2(f - 8)

How to multiply fractions?

• Subtract the numerators and denominators to find the difference.
• Add the numerators and denominators separately.
• Multiply the numerators and denominators to get the product of the fractions.
• Divide the numerators and denominators to simplify the fractions.

How to multiply rational algebraic expressions?

• Divide the numerators and denominators, then simplify.
• Multiply the numerators and denominators, then simplify.
• Multiply only the denominators, ignoring the numerators.
• Add the numerators and denominators, then simplify.

How to divide rational algebraic expressions?

• Factor the expressions, multiply by the reciprocal, and simplify.
• Subtract the expressions and simplify.
• Multiply the expressions and then factor.
• Add the expressions directly and simplify.

Multiply: 30b²/6c x 4c²/b⁴

• 20/b^2
• 60b^3/6c^2
• 12c/b^3
• 5b/c

What is the factor of 2x² + x -15?

• (2x + 5)(x + 3)
• (2x - 5)(x + 3)
• (x - 5)(2x + 3)
• (2x + 5)(x - 3)

Multiply:3d/ (3f-12) x (4f-16)/12d²

• 1 / 4d
• 1 / 12d
• 3 / d
• 1 / 3d

What is the reciprocal of 6/7?

• 5/6
• 6/5
• 7/5
• 7/6

What is the least common multiple (LCM) of 12 and 15?

• 30

• 60

• 45

• 75