Find the value of the polynomial x2 - 7x + 12 at : x =1/2
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Answer:
(1/2)^2 -7×1/2+12
1/4-7/2+12
35/4
8.75
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This question can be solved by splitting its middle term
x² - 7x + 12
⇒ x² - 3x - 4x + 12
⇒ x ( x - 3 ) - 4 ( x - 3 )
⇒ ( x - 3 ) ( x - 4 )
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