Question

Find the roots of the following quadratic equations by using formula x² - 7x - 5

Answer 1

Answer :-

First suppose that polynomial = 0

Than,

${x}^{2} - 7x - 5 = 0 \\ \\ {x}^{2} - 7x = 5 \\ \\ {x}^{2} - x = \frac{5}{7} \\ \\ {x}^{2} = \frac{5}{7} + x$