Learning Task 2. (pahina 12) Basahing mabuti at piliin ang tamang sagot. 1. Illustrate a rational expression whose numerator is r and the denominator is s. a. r / s b. s / r 2. Given the expressions -1 and b+1. Illustrate a rational algebraic expression whose numerator is -1. a. 1 b. – 1 b +1 b + 1 3. Illustrate a rational algebraic expression whose two polynomials are m - 9 and m² - 81 respectively. a. m – 9 b. m + 9 m2 – 81 m2 - 81 4. Dianne is asked to check if we can replace x by -3 or 6 in the rational algebraic expression x + 3. x - 6 How does Dianne should do it? A. Replace x by -3 in the numerator and 6 on the denominator. B. Replace x by -3 and 6 both the numerator and denominator to check. C. Number 6 should not be replaced because it will result to zero. D. -3 is the only allowed replacement for x.