\( \Large 2x^{2} - \left(6x + 5x\right) + 15 = 0 \) [by factorization method] = \( \Large 2x^{2} - 6x - 5x + 15 = 0 \) = \( \Large 2x \left(x - 3\right) - 5 \left(x - 3\right) = 0 \) = \( \Large \left(2x - 5\right) \left(x - 3\right) = 0 \) Therefore, \( \Large x = \frac{5}{2}, 3 \) Hence, the roots are \( \Large \frac{5}{2}, 3 \)