3 years ago

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

Mathematics

1 answer:

mixer [17]3 years ago

5 0

Answer:

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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