Q1)
thankies
\(\quad (f-g)(x)\\= f(x) - g(x)\\= (3x^5+6x^2-5) - (2x^4+7x^2-x+16) \\ =3x^5+6x^2-5-2x^4-7x^2+x-16\\ =3x^5-2x^4-x^2+x-21\)
