81k^2 - m^2 factors to
(9k + m)(9k - m)
Prove this by FOILing.
First - 81k^2
Outer - (-9km)
Inner - 9km
Last - (-m^2)
Put it into equation form
81k^2 - 9km + 9km - m^2
And combine terms to get the original equation,
81k^2 - m^2.
⭐ Answered by Hyperrspace (Ace) ⭐
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72y+108z Factored is 36(2y+3z). So I guess the 2 factors will be 2y and 3z??
Answer:
≈ 5
Step-by-step explanation:
<u><em>You can use the Pythagorean Theorem to solve this:</em></u>
<u><em>Now plug in the numbers into the formula:</em></u>
36 + 
= 64
<u><em>Subtract 36 from both sides:</em></u>
36 + = 64
-36 -36
_________
= 28
<em><u>Square both sides:</u></em>
b = 5.29
b ≈ 5
