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Can anyone please teach me how to work out x2-8x+19?

Can anyone please teach me how to work out x2-8x+19?
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3 votes
Can anyone please teach me how to work out x2-8x+19?

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User Yale Newman
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1 Answer

2 votes

x^2-8x+19=\\ x^2-8x+16+3=\\ (x-4)^2+3\\\\ (x-4)^2+3=0\\ (x-4)^2=-3\\ x\in \emptyset
answered
User Davidcelis
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