Question

hello guyz plz answer the questions fastly!!!​

Answer 1

definition for polynomial

Answer 2

$3)8 {x}^{2} + 5x + 1 \\ \\ x - 10 = 0 \\ \\ x = 10 \\ \\ = 800 + 50 + 1 \\ \\ = 800 + 51 \\ \\ = 851$

$4) {x}^{2} + 7x - 11 \\ \\ 3x - 2 = 0 \\ \\ 3x = 2 \\ \\ x = \frac{2}{3} \\ \\ = (\frac{2}{3} )^{2} + 7( \frac{2}{3} ) - 11 \\ \\ = -\frac{4}{9} + \frac{14}{3} - 11 \\ \\ = \frac{ - 61}{9 }$