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X2-8x+21 make the expression (x-h)2+k is equivalent

X2-8x+21 make the expression (x-h)2+k is equivalent
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X2-8x+21 make the expression (x-h)2+k is equivalent

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User Paul Irish
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1 Answer

2 votes
x2-8x+21 = x² - 8x + (8/2)²- (8/2)² + 21

= (x² - 8x + 16 ) - 16 + 21
= (x - 4)²+ 5

answered
User Anna
by
8.4k points
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