Question 253904
{{{4x^2-3x^2+5x-x^2-1}}} Start with the given expression.



{{{(4x^2-3x^2-x^2)+5x-1}}} Group like terms.



{{{5x-1}}} Combine like terms.



So {{{4x^2-3x^2+5x-x^2-1=5x-1}}}



So you are correct.