Posted by
Justin on
.
(3x to the fourth  5x squared  6x +5) + (4x cubed + 6x squared + 7x 1)

Algebra I 
John,
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Algebra I 
Steve,
Ok, so we have
(3x^4  5x^2  6x + 5) + (4x^3 + 6x^2 + 7x  1)
add it up, collecting like powers:
3x^4  4x^3 + (5 + 6)x^2 + (6 + 7)x + (5 + 1)
= 3x^4  4x^3 + x^2 + x + 4