Veronica bought 20 bags of candy for a school dance the first 5 bags cost $1.79 each the rest of the bags cost $1.19 each how mu
1 answer:
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Answer:
<em>i: </em>x=-2, x=1
<em>ii: </em>x=-1/2
Step-by-step explanation:
Quadratic form:
You solve <em>i </em>by using FOIL (First, Outside, Inside, Last) because it is a multiplication problem.
<em>"first"</em> would be , which would equal
<em>"outside"</em> would be , which would equal
<em>"inside"</em> would be , which would equal
<em>"last" </em>would be , which would equal
Now you need to combine the terms so that they are one after the other
Combine like terms, and you should get:
i Solution
<em>You need to get the variable by itself.</em>
<em>Subtract two from both sides</em>
<em>Add one to both sides.</em>
ii Solution
<em>Add all the terms.</em>
For a monic quadratic (factor of 1 on ) we always add half the coefficient on the linear (
) term, so
Answer: 49/4