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svlad2 [7]
4 years ago
5

Solve x^2 - 6x = -5 by completing the square.

Mathematics
1 answer:
Vadim26 [7]4 years ago
7 0
x^2-6x=-5\\\\x^2-2x\cdot3=-5\ \ \ |+3^2\\\\\underbrace{x^2-2x\cdot3+3^2}_{(a-b)^2=a^2-2ab+b^2}=-5+3^2\\\\(x-3)^2=-5+9\\\\(x-3)^2=4\to x-3=\pm\sqrt4\\\\x-3=-2\ \vee\ x-3=2\ \ \ |+3\\\\x=1\ \vee\ x=5
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Solve <br>-X^2+7(y+2)-1 x=5 y=-9​
spayn [35]

Answer:

The expression = -75

Step-by-step explanation:

Evaluate: Enter a number for each variable.

−x2+7(y+2)−1

x=

5

y=

-9

Evaluate for x=5,y=−9

−52+7(−9+2)−1

−52+7(−9+2)−1

=−75

5 0
3 years ago
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PtichkaEL [24]

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Step-by-step explanation: Hope this helps!

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3 years ago
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daser333 [38]
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4 years ago
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Step2247 [10]

Answer:

628.32 in.²

Step-by-step explanation:

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6 0
3 years ago
Read 2 more answers
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