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vovikov84 [41]
3 years ago
14

Find the roots of the quadratic equation x² – 8x = 9 by completing the square. Show your work.

Mathematics
1 answer:
Artist 52 [7]3 years ago
8 0
No solutions beacause you have to factor out numbers for -9 but they must equal -8 when adding them.
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What is the missing length? 18 m and w. Area = 90 m ^2. W =____ meters
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7 0
3 years ago
Please help!! And pls show work
coldgirl [10]
<h3>The answer to your question is k (-3) = 21!</h3>

Here's how I got this answer:

<em><u>K(a) = 2a^2 - a </u></em>

<em><u>K(a) = 2a^2 - a K(-3) = 2(-3)^2 - (-3)</u></em>

<em><u>K(a) = 2a^2 - a K(-3) = 2(-3)^2 - (-3)K(-3) = 2(9) + 3</u></em>

<em><u>K(a) = 2a^2 - a K(-3) = 2(-3)^2 - (-3)K(-3) = 2(9) + 3K (-3) = 18 + 3</u></em>

<em><u>K(a) = 2a^2 - a K(-3) = 2(-3)^2 - (-3)K(-3) = 2(9) + 3K (-3) = 18 + 3K (-3) = 21</u></em>

I hope this helps!

Also sorry for the late answer, I just got the notification that you replied to my comment, I hope I came in time!

8 0
3 years ago
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