What number should be added to the expression to result in an expression equivalent to a perfect square?
-7.5
7.5
-56.25
56.25
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Problem 2
Student Task Statement
Noah uses the quadratic formula to solve the equation . He finds or 1. But, when he checks his answer, he finds that neither -2.5 nor 1 are solutions to the equation. Here are his steps:
, ,
or 1
Explain what Noah’s mistake was.
Solve the equation correctly.
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Problem 3
Student Task Statement
Solve each quadratic equation with the method of your choice.
