17-10-2017
Mathematics

contestada

what is (x-4)^2=28 when solved as a quadratic equation such as -4+-2 square 7

Respuesta :

zrh2sfo zrh2sfo

20-10-2017

Solve for x:(x - 4)^2 = 28
Take the square root of both sides:x - 4 = 2 sqrt(7) or x - 4 = -2 sqrt(7)
Add 4 to both sides:x = 4 + 2 sqrt(7) or x - 4 = -2 sqrt(7)
Add 4 to both sides:Answer: x = 4 + 2 sqrt(7) or x = 4 - 2 sqrt(7)

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