Question

what must be added to y3-y2 -3y-2 to get y Sq -5y+6 ??​

Answer 1

The terms that should be added are

${y}^{2} - 5y + 6 \: - ( {y}^{3} - {y}^{2} - 3y - 2) \\ = {y}^{2} - 5y + 6 - {y}^{3} + {y}^{2} + 3y + 2 \\ = - {y}^{3} + 2 {y}^{2} - 2y + 8$

Hope it is Helpful