Question

${x}^{9 } - 3 {x}^{8 } + {x}^{6} - 9 {x}^{4 } - 4 {x}^{4 } - 16x + 84 \div {x}^{5 } - 3 {x}^{4 } - 4x + 12$

Answer 1

it is of which standard.....