Question

Simplify completely: (x^2+4x-45)/(x^2+10x+9x)

Answer 1

first you have to factor top and bottom part

Answer 2

\[\frac{ x^2+4x-45 }{ x^2+10x+9 }\]

Answer 3

+9x?

Answer 4

Ah

Answer 5

Do as Nnesha says, factor the top and bottom :)

Answer 6

What are the restrictions on the variable?

Answer 7

What do you get when you factor the numerator?

Answer 8

Hint: What adds up to 4, and what two products give you - 45.

Answer 9

x-1?

Answer 10

\[\frac{ x-5 }{ x+1 }\]

Answer 11

Good

Answer 12

What are the restrictions on the variable?

Answer 13

Looks like -9 and -1

Answer 14

Thank you.

Answer 15

@iambatman

why -9?

Answer 16

You have to still consider
\[\frac{ (x+9)(x-5) }{ (x+9)(x+1) }\]