Question

Решите уравнение 5x2 – 9 = 0.
15 баллов.

Answer 1

5x2 – 9 = 0

$5x_{2} -9-(-9-)=0-(-9)$

$5x_{2} +0=9$

$5x_{2} /5=9/5$

$x_{2} =9/5$=1.8