6 Matching Annotations
- Aug 2020
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math.libretexts.org math.libretexts.org
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Translate into an equation. It may be helpful to restate the problem in one sentence with all the important information. Then, translate the English sentence into an algebraic equation.
It helps me to go back and look at what the problem is asking, then figure out what formula to start with. I also wrote down all the steps in my notes to easily solve the problem.
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math.libretexts.org math.libretexts.org
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It is the square of the binomial 3x+43x+43x+4.
We can check this by multiplying the factors back out.
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math.libretexts.org math.libretexts.org
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Which factors are correct? To decide that, we multiply the inner and outer terms
I have never used this method before to check my factors but I will start doing so to make sure my answers are correct
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−9(6); −9(−6)−9(6); −9(−6)−9(6);\space −9(−6).
-54, 54
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math.libretexts.org math.libretexts.org
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−3a(7a+8b)−3a(7a+8b)−3a(7a+8b)
-3a x 7a - 3a x 8b = -21a^2 -24ab
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Find the least common multiple (LCM) of 18 and 24
=72
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