Reduce to lowest term

Question

1. z^2-z-6/z-6 * z^2-6z/z^2 2z-15

2. w^2-16/w * 3/4-w

3. y^2 2y/y^2 y-2 / y 5/y^2 4y-5

Answer 1

why is this in insurance?

Answer 2

?

Answer 3

(z²-z-6)/(z-6) * (z²-6z)/(z²+2z-15)

= [(z-3)(z+2)]/(z-6) * [z(z-6)]/[(z+5)(z-3)]

= [z(z+2)] / (z+5)

(w²-16)/w * 3/(4-w)

= [(w+4)(w-4)]/w * 3/-(w-4)

= -3(w+4)

= -3w - 12

(y² + 2y)/(y² +y - 2) * (y² + 4y - 5)/(y+5)

= [y(y+2)]/[(y+2)(y-1)] * [(y+5)(y-1)]/(y+5)

= y/(y-1) * (y-1)/1

= y

[Answers: see above]

Answer 4

Put this one under education.