Find each sum or difference. Answer must be in standard form.
Classify the polynomial 3x + 12 by degree and number of terms.
Classify the polynomial x^{3}-8 by degree and number of terms.
Classify the polynomial 2x^{4}-x^{3}+5x^{2}+x-7 by degree and number of terms.
Write the y^{2} + 3y^{4}-7y +2y^{3}-4 in standard form.
Write the -2b^{2}+5ab+7a^{2} in standard form.
(x^{2}-4x+3)+(3x^{2}-3x-5)
(2m-3+7m^{2})-(3-9m^{2}-2m)
(3a^{2}-a+3)+(4a^{2}-5)
(2x^{2}+3y^{2}-z^{2})-(x^{2}-y^{2}-z^{2})+(4x^{2}-3y^{2})
Find the sum of (2x^{2}-6x-2) and (x^{2}+4x)