21. Simplify using exponent laws then evaluate when x=1 and y=-5 No decimal answers. a)x^2y^12x^5y^-9 b) (2x^5y^2)^2 c) (x^14y^7)/(x^12)y^(5)

Question

Answer 1

### a)

### b)

### c)

Answer 2

## Step 1: Simplify Part (a)### Combine the

terms and the

terms separately by adding the exponents.

. Substitute

and

:

.## Step 2: Simplify Part (b)### Distribute the exponent to each term inside the parentheses by multiplying the exponents.

. Substitute

and

:

.## Step 3: Simplify Part (c)### Divide the

terms and the

terms separately by subtracting the exponents of the denominator from the exponents of the numerator.

. Substitute

and

:

.

Question