# How do you simplify #9k - 3k#?

How many kangaroos would remain if you had nine kangaroos and removed three of them?

Indeed, six kangaroos!

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To simplify 9k - 3k, you combine like terms, which in this case are the terms with the variable k. So, 9k - 3k simplifies to (9 - 3)k, which equals 6k.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

- How do you simplify the algebraic expression #-a(2b - 3c) - 3a(b + c)#?
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- Consider the polynomial #f(x)=x^4-4ax^3+6b^2x^2-4c^3x+d^4# where #a,b,c,d# are positive real numbers. Prove that if #f# has four positive distinct roots, then #a > b > c > d#?
- For what vaues of #k# does #x^2-kx+2k=0# have a solution?

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