rysr
rysr
25-04-2018
Mathematics
contestada
x2-8x+21 make the expression (x-h)2+k is equivalent
Respuesta :
Аноним
Аноним
25-04-2018
x2-8x+21 = x² -
8
x + (
8
/2)²-
(
8
/2)²
+ 21
= (x² - 8x + 16 ) - 16 + 21
= (x - 4)²+ 5
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