Keep it up. Go on with your efforts - your are making good progress
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A more complicated expression.
I think it mean is 12-4
Yes. In general, you can combine expressions into more complicated expressions. For example, adding an expression to another expression will, again, yield an expression.
That is not idiomatic. The idiom is "elbow grease" which means "exertion" comparing it to a bottled product."You can get that brass to shine if you use more elbow grease." means "Polish harder and the brass will shine."
Elbow grease is an idiom or term used meaning to work hard, to put more physical effort into a job or task.
with more bleach or a good scrubbing with some elbow grease (not literally though)
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Because cashiers work in a store to impress people so the more stuff they sell the more money the get<3 thank you for reading my answer:)$$$$$$$
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Elbow.
The hoof is more distal to the elbow. The wrist is between the elbow and hoof.
When 2 or more people do the same face.
Tennis elbow would be far more common.
For each of a list of algebraic expressions, find one or more common factors and factorise the expression.