Question

find the value of the quadratic equation
$5 {x}^{2} - 7x + 2 = 0$
formula method

Answer 1

Answer:

$\bold{1\ \ \ \ \ OR\ \ \ \ \ \frac{2}{5}}$

Step-by-step explanation:

$a = 5\ \ ;\ b = -7\ \ ;\ c = 2 \\ \\ \\ b^2 - 4ac \\ \\ = (-7)^2 - (4 \times 5 \times 2) \\ \\ = 49 - 40 = 9 \\ \\ \\ x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \\ \\ = \frac{7 \pm \sqrt{9}}{10} \\ \\ = \frac{7 \pm 3}{10} \\ \\ = \bold{1\ \ \ \ \ OR\ \ \ \ \ \frac{2}{5}}$

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