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2x² + x - 16 = 0
x₁ = (1/4)(- 1 - √129)
x₂ = (1/4)(√129 - 1)
a = 12 b= 6 c= – 96
Δ = b² - 4.a.c
Δ = 6² - 4.(12).(-96)
Δ = 36 + 4608
Δ = 4644
x = - b ± √Δ
2.a
x = -(6) ± √4644
2.12
x = -(6) ± √4644
24
x'= -(6) + √4644 = -6√4644
24 24
x"= -(6) - √4644 = -6√4644
24 24
S[-6√4644/24 , -6√4644/24]