Add the following polynomials: (−x3 + 26x2 − 7x − 13) + (6x4 − x3 +8x + 27) answers 6x^4 −2x^3 + 26x^2 −15x + 14 −6x^4 + 26x^2 + x + 14 } 6x^4 +26x^2 −x − 14 6x^4 −2x^3 + 26x^2 +x + 14