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Nadusha1986 [10]
3 years ago
9

Rewrite the equation by completing the square. x^2 -4x =0

Mathematics
1 answer:
olasank [31]3 years ago
6 0

Step-by-step explanation:

x² − 4x = 0

To complete the square, take half of the second coefficient, square it, then add the result to both sides.

(-4/2)² = 4

x² − 4x + 4 = 4

(x − 2)² = 4

x − 2 = ±2

x = 2 ± 2

x = 0 or 4

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<h2>Greetings!</h2>

Answer:

x = 67.5

Step-by-step explanation:

Because AB and NP lines are parrallel, we can find out the scale factor by dividing size MA by MN.

This works because you find out what the MA size has to be multiplied to to get to MN, which will also work in reverse to find angle MB from MP.

71.5 - 22 = MA = 49.5

71.5 ÷ 49.5 = \frac{13}{9}

So to get to line MP length, line MB had to be multiplied by \frac{13}{9} to get 97.5

The reverse of this is dividing 97.5 by \frac{13}{9}:

97.5 ÷ \frac{9}{13} = 67.5

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<h2>Hope this helps!</h2>
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2 years ago
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HCF (A,B) = 2^2 × 3^4 × 5^2

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Step-by-step explanation:

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3 years ago
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Step-by-step explanation:

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