Question

$( x^{2} -4x-6) - (5 x^{2} -13x-9)=-3-x-4 x^{2}$

Answer 1

x² - 4x - 6 - 5x² + 13x + 9 + 3 + x + 4x² = 0
10x + 6 = 0
10x = - 6
x = - 0,6