Adding constraints to the sum of two rational expressions with unlike denominators

What is the purpose of finding the Least Common Denominator (LCD) in polynomial expressions?

• To factor the expression

• To eliminate variables

• To create equivalent fractions

• To simplify the expression

Which method is recommended for multiplying two binomials?

• The lattice method

• The box method

• The grid method

• The cross method

What is the result of combining like terms in the expression X^3 - 5X^2 + 4X?

• X^3 - 5X^2 + 4X

• X^3 - 4X^2 + 4X

• X^3 - 5X^2 + 3X

• X^3 - 5X^2 + 7X

What is the final expression obtained after adding 4X and 3X?

• X^3 - 5X^2 + 4X + 12

• X^3 - 5X^2 + 7X + 12

• X^3 - 5X^2 + 3X + 12

• X^3 - 5X^2 + 8X + 12

Which values of X are not allowed in the final expression?

• 0 and 4

• 0 and -4

• 0, 4, and -4

• 4 and -4