Question

Find the root of x2 = 18x - 77​

Answer 1

Answer:

{7, 11}

Step-by-step explanation:

ax² + bx + c = 0

$x_{1} +x_{2} = - \frac{b}{a}$

$x_{1} x_{2} = \frac{c}{a}$

~~~~~~~~~~

x² - 18x + 77 = 0

$x_{1} x_{2}$ = 77 ⇒ $x_{1}$ = 7 and $x_{2}$ = 11