Neha's marks in two papers add up to 30 and their product is 209. Taking one paper's marks as x gives x^2 - 30x + 209 = 0. Her marks in the two papers were:

Question

Accepted Answer

19 and 11. The other paper carries 30 - x marks, so x(30 - x) = 209 => x^2 - 30x + 209 = 0. D = 900 - 836 = 64, √D = 8. x = 30 ± 8/2 = 19 or 11. Check: 19 + 11 = 30 and 19 × 11 = 209.

Neha's marks in two papers add up to 30 and their product is 209.
Taking one paper's marks as $x$ gives $x^{2} - 30 x + 209 = 0$ .
Her marks in the two papers were:

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More Class 10 The Quadratic Formula practice

Neha's marks in two papers add up to 30 and their product is 209.Taking one paper's marks as x gives x2−30x+209=0.Her marks in the two papers were:

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 10 The Quadratic Formula practice

Neha's marks in two papers add up to 30 and their product is 209.
Taking one paper's marks as $x$ gives $x^{2} - 30 x + 209 = 0$ .
Her marks in the two papers were: