Question

(15-x)(7x+6.3)=0
решите уравнение

Answer 1

$(15 - x)(7x + 6.3) = 0$

$(15 - x)(7x + \frac{63}{10 } ) = 0$

$15 - x = 0 \\ 7x + \frac{63}{10 } = 0$

$x = 15 \\ x = - \frac{9}{10}$

х¹= -0,9

х²= 15