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

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asked Dec 3, 2019 156k views

1 Answer

Kzg · Answer 1 · 2019-12-09T17:11:16+0000

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

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

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