(2a)^2/10=1-(a^2/10)

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Solution for (2a)^2/10=1-(a^2/10) equation: 


a in (-oo:+oo)

((2*a)^2)/10 = 1-((a^2)/10) // - 1-((a^2)/10)

((2*a)^2)/10+(a^2)/10-1 = 0

1/2*a^2 = 1 // : 1/2

a^2 = 2

a^2 = 2 // ^ 1/2

abs(a) = 2^(1/2)

a = 2^(1/2) or a = -2^(1/2)

a in { 2^(1/2), -2^(1/2) }

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