jriosjr25896 jriosjr25896

23-05-2020
Mathematics

contestada

What are the solution(s) to the quadratic equation 40 - x2 = 0?
O x = +2/10
O x = +4/10
O x = +2V5
O x = +4/5

Respuesta :

sqdancefan sqdancefan

27-07-2020

Answer:

[tex]x=\pm2\sqrt{10}[/tex]

Step-by-step explanation:

You want to solve ...

[tex]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}[/tex]

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