Respuesta :

LarkeraC
x^2-12+36=90
(x-6)^2=90
x-6= sqrt of 90
x-6= +- 3 sqrt of 10
x = 6 +- 3 sqrt of 10 
          

Answer: 8.124

Step-by-step explanation:

x^2 - 12 + 36 = 90

x^2 + 24 = 90

subtract 24 from bothside

x^2 + 24 - 24 = 90 - 24

x^2 = 66

Take the square root of bothside

x = √66

x=8.124

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