The price of one type of cheese is $2.60 per pound. What is the cost of a 2.5-pound package of cheese?
1 answer:
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Answer:
a = - , b = -
Step-by-step explanation:
To obtain the required form use the method of completing the square
add/ subtract ( half the coefficient of the x- term)² to x² - 9x
y = x² + 2(- )x +
-
+ 14
= (x - )² -
+
= (x - )²-
← in the form (x + a)² + b
with a = - and b = -
Basic properties that will be used:
All of these expression can be written to match on or more of the patterns above.