3 years ago

What are the solution(s) to the quadratic equation 40 - x2 = 0?

Mathematics

1 answer:

Zanzabum3 years ago

5 0

Answer:

$x=\pm2\sqrt{10}$

Step-by-step explanation:

You want to solve ...

$40 -x^2=0\\\\40=x^2\qquad\text{add $x^2$}\\\\\pm\sqrt{40}=x\qquad\text{take the square root}\\\\\boxed{x=\pm2\sqrt{10}}\qquad\text{simplify}$

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