Question

Which of the following quadratic equations has roots 3, 5 ?

Answer 1

Answer :

We know that if a and b be the roots of any quadratic equation, then the required equation be

    (x - a) (x - b) = 0

⇒ x² - (a + b) x + ab = 0

The roots are 3 and 5 for the required quadratic equation and hence the required equation be

    x² - (3 + 5) x + (3 * 5) = 0

⇒ x² - 8x + 15 = 0

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Answer 2

Answer:

a) x2-15x+8]

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