Question

(1/8x^+2/7x^3+7/8^2+7)+(-5/8x^4+1/8x^2-7)

Answer 1

\[(1/8x^4+2/7x^3+7/8^2+7)+(-5/8x^4+1/8x^2-7)
\]
=
\[-4/8 x^4 + 2/7 x^3 + x^2\]
=
\[2/7 x^3 - 1/2 x^4 + x^2\]

Answer 2

the firdt 8x have not exponent

Answer 3

first