Question

determine whether given values are roots : 3x² -13x -10 = 0 ; 5 , -2/3​

Answer 1

Step-by-step explanation:

$3x {}^{2} - 13x - 10 = 0 \\ or \: \: 3x {}^{2} - 15x + 2x - 10 = 0 \\ or \: \: 3x(x - 5) + 2(x - 5) = 0 \\ or \: \: (x - 5)(3x + 2) = 0 \\ \\ (x - 5) = 0 \\ or \: \: x = 5 \\ \\ 3x + 2 = 0 \\ or \: \: 3x = - 2 \\ or \: \: x = - \frac{2}{3}$