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b = -3
c = 5
maka nilai dari
x₁ + x₂ = -b/a
= -(-3)/3
= 1
x₁ . x₂ = c/a
= 5/3
maka nilai dar
1/x₁ + 1/x₂ = (x₁ + x₂)/ x₁ . x₂ = -b/c
= -(-3)/5
= 3/5