Question

The expression below is not a polynomial. A). Factor out the variable with the lowest or most negative exponent from the express. B) Factor completely.
x^-3-2x^-4-8x^-5. Factor out x^-5

Answer 1

@sauravshakya

Answer 2

(x^-5)(x^2-2x-8)

Answer 3

ok so is that what im looking for in a part?

Answer 4

or do i fact

Answer 5

or that now?

Answer 6

that is not completely factored. that is just factoring out x^-5
the completely factored equation is (x^-5)(x-4)(x+2)

Answer 7

but that would be my B answer right?

Answer 8

if B is factoring out completely, than B is my second expression

Answer 9

the (x^-5)(x-4)(x+2)

Answer 10

can u help me on another one?

Answer 11

okay

Answer 12

im going to post it give me just a sec.

Answer 13

just write it here

Answer 14

or not

Answer 15

ok

Answer 16

The carters can purchase Season's choice blend for 1.81 per pound and Garden Mix blend for 1.21 per pound. If they wish to purchase 20 pounds and spend 32 dollars on birdseed, how many pounds of each type should they buy.

Answer 17

It has 2 parts. The 1st part ask how many pounds of season's choice blend should they buy

Answer 18

start buy making a system of equations. Say x is the number of pounds of Season's choice blend and y is the number of pounds of Garden Mix.
how would you set up the equation?

Answer 19

x+y maybe

Answer 20

not to sure

Answer 21

you're getting there. x+y would be the total pounds they are buying and they plan to buy 20 pounds so x+y=20

Answer 22

ok

Answer 23

now whenever you have a system of equations, you need the same number of equations as there are unknown variables. In this case, you don't know x and y so you need 2 equations

Answer 24

the second one would be 1.81x + 1.21y = 32 or the total cost

Answer 25

ok

Answer 26

there are two ways to solve this. I'll just show you substitution. solve one equation for on e variable and input it into the other one.
so x=20-y.
put that into 1.81x + 1.21y = 32 and solve for y.
1.81(20-y) + 1.21y = 32

Answer 27

try solving for y

Answer 28

7 right?

Answer 29

so would that be the answer for the Season's choice or Garden mix

Answer 30

yes. y is the pounds of Garden Mix.

Answer 31

put 7 into x+y=20 for y and solve for x

Answer 32

what about the season's choice?

Answer 33

x is season's choice

Answer 34

so 13

Answer 35

?

Answer 36

yes

Answer 37

may i ask u another one right here?

Answer 38

sure

Answer 39

find a expression in factored form, for the perimeter of the figure.