Use the rules of equations and inverse operations to solve the equation. In your final answer, include all of your work. 4 -x^2
= -16
2 answers:
Answer:
±2√5
Step-by-step explanation:
4 -x^2 = -16 can be rewritten as
20 = x^2.
This quadratic has two solutions: find them by taking the square root of both sides:
x = ±√20 = ±√4√5 = ±2√5
The answer is x^2=20
First you subtract 4and you get -x^2=-20
Then you divide by -1 which get you x^2=20
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I hope this helps!
~kaikers
