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El triple = 3s
El cuadrado = s²
3s + s² = 88
3s + s² - 88 = 0
s₁ = - 3 + √((3)² - 4 (- 88))/2
s₁ = - 3 + √(9 + 352)/2
s₁ = - 3 + √361/2
s₁ = (- 3 + 19)/2
s₁ = 16/2
s₁ = 8
s₂ = (- 3 - 19)/2
s₂ = - 22/2
s₂ = - 11
Tiene dos soluciones.
El número es 8 ó - 11