What number must you add to the expression below to complete the square? x^2-20x?

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04-05-2018
Mathematics

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What number must you add to the expression below to complete the square? x^2-20x?

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calculista calculista · Answer 1 · 2018-05-14T16:38:25+02:00

calculista calculista

14-05-2018

we have that
x²-20x
Group terms that contain the same variable
(x²-20x)
Complete the square
(x²-20x+10²)------> (x-10)²

the answer is
the number must be 100

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