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VladimirAG [237]
3 years ago
12

What is 2x2+11x-15=0

Mathematics
1 answer:
Elanso [62]3 years ago
4 0
2x^{2} + 11x - 15 = 0

Use the quadratic equation:
x = \frac{-b \pm \sqrt{b^{2} - 4ac}}{2a}
= \frac{-11 \pm \sqrt{121 - 4(2)(-15)}}{4}
= \frac{-11 \pm \sqrt{121 + 120}}{4}
= \frac{-11 \pm \sqrt{241}}{4}

\therefore x = \frac{-11 + \sqrt{241}}{4}
or x = \frac{-11 - \sqrt{241}}{4}
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