What is 3x^4 - 5x^3 +9x^7 in standered form

Answer 1

remember that an equation in standard form has to have decreasing exponents. So in this case f(x)=3x⁴-5x³+9x⁷ in standard form would be, f(x)=9x⁷+3x⁴-5x³

So the answer is 9x⁷+3x⁴-5x³