Answer:
Step-by-step explanation:
A quadratic equation has one root if the discriminant is 0.
That is we need for this particular question.
Compare the following to find :
The variable is representative of the variable here.
Plug in into :
Subtract 4 on both sides:
Divide both sides by 16:
Reduce:
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Answer:
It would have to be 25 dimes
Step-by-step explanation: