Question 109386
{{{(5x^2-3x + 2) + (-3x^2-5x-8)-(x^2 + 3x-10)}}} Start with the given expression



{{{5x^2-3x + 2-3x^2-5x-8-x^2-3x + 10}}} Distribute the negative




{{{(5x^2-3x^2-x^2)+(-3x-5x-3x)+(2-8+10)}}} Group like terms



{{{x^2-11x+4}}} Combine like terms



So the expression {{{(5x^2-3x + 2) + (-3x^2-5x-8)-(x^2 + 3x-10)}}} simplifies to  {{{x^2-11x+4}}}