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X₁,X₂ = -b ⁺₋ √b² - 4ac / 2a
= -(-5) ⁺₋ √(-5)² - 4(3)(-4) / 2(3)
= 5 ⁺₋ √25+48 / 6
= 5 ⁺₋ √73 /6
x₁ = 5 + √73 / 6 x₂ = 5 - √73 / 6
* 4 / 5+√73/6 + 4 / 5-√73/6
= 4(5-√73/6) + 4(5+√73/6) / (5+√73/6)(5-√73/6)
= 20 - 2/3√73 + 20 + 2/3√73 / 25-5/6√73+5/6√73-73/36
= 40 / 25-73/36
= 40 / 900/36 - 73/36
= 40 / 827/36
= 1440 / 827
= 1 613/827