Subjects/Algebra/Algebraic expressions/Sum of polynomials3. Algebraic expressionsSum of polynomialsLevel: fundamentalIn 3. Algebraic expressionsFormulaCopy LaTeX(P+Q)(x)=k∑(ak+bk)xkDetailCoefficients of like-degree terms are added.Related formulasRelatedPolynomial of degree nP(x)=anxn+an−1xn−1+⋯+a1x+a0Open formulaOpen in sectionRelatedProduct of polynomials(i∑aixi)(j∑bjxj)=k∑(i+j=k∑aibj)xkOpen formulaOpen in section