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

User Vivek Padhye
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1 Answer

5 votes
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
User Kzg
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