Question

Add the following polynomials:

$7-\frac{5}{6}{x}^4-\frac{1}{5}{x}^3+x^2$ and $4-\frac{1}{6}{x}^4+\frac{4}{5}{x}^3+\frac{3}{2}{x}^2$

• A. $-x^4-\frac{3}{5}{x}^3+\frac{5}{2}{x}^2+11$
• B. $-x^4+\frac{3}{5}{x}^3-\frac{5}{2}{x}^2+11$
• C. $-x^4+\frac{3}{5}{x}^3+\frac{5}{2}{x}^2-11$
• D. $-x^4+\frac{3}{5}{x}^3+\frac{5}{2}{x}^2+11$

Answer 1

The correct option is D $-x^4+\frac{3}{5}{x}^3+\frac{5}{2}{x}^2+11$

$7-\frac{5}{6}{x}^4-\frac{1}{5}{x}^3+x^2$ +$4-\frac{1}{6}{x}^4+\frac{4}{5}{x}^3+\frac{3}{2}{x}^2$ $=-x^4+\frac{3}{5}{x}^3+\frac{5}{2}{x}^2+11$