Question

Tyler simplified the expression. His procedure is shown below.

Answer 1

Answer:

Step-by-step explanation:

                                                        1

Tyler correctly rewrote x^(-3) as ------- , but

                                                       x³

                                                       1

he incorrectly wrote y^(-9) as   ---------

                                                    y^(-9)

Both x^9 and y^9 should be in the denominator.  This corresponds to the 2nd given possible answer.

Answer 2

Answer:

B:Both powers should be in the denominator with positive exponents.

Step-by-step explanation:

We are given that Tyler simplified an expression

$x^{-3}y^{-9}$

We have to find an error which Tyler makes in her simplification

Step 1: $x^{-3}y^{-9}$

Step 2:$\frac{1}{x^3}\cdot y^{-9}$

Step 3:$\frac{1}{x^3y^9}$

Hence, Tyler's error is both exponents should be denominator with positive exponents.

Answer:B:Both powers should be in the denominator with positive exponents.