Question 952741

{{{(3x^2 + x + 7) + (7x^2 + 8x -3)}}}


{{{3x^2 + x + 7 + 7x^2 + 8x -3}}}


{{{3x^2+ 7x^2 + x + 8x+ 7 -3}}}


{{{10x^2 + 9x+ 4}}}