anzlettgoggans anzlettgoggans

20-03-2019
Mathematics

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Which number should be added to both sides of the equation to complete the square x^2-10x=7

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sqdancefan sqdancefan

20-03-2019

Answer:

25

Step-by-step explanation:

The number that needs to be added is the square of half the x-coefficient:

(-10/2)^2 = 25

_____

Adding that gives ...

(x -5)^2 = 32

x = 5 ± 4√2

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