korijennings korijennings

13-04-2020
Mathematics

contestada

What are the solution(s) to the quadratic equation 40 - x2 = 0?
x = +210
x = +4/10
x = +2,5
x = 14,5

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

13-04-2020

Answer:

±2sqrt(10) = x

Step-by-step explanation:

40 - x^2 = 0

Add x^2 to each side

40 - x^2+x^2 = x^2

40 = x^2

Take the square root of each side

sqrt(40) = sqrt(x^2)

±sqrt(40) = x

±sqrt(4) sqrt(10) = x

±2sqrt(10) = x

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