Question

Is Is -3 the zero of polynomial 2x^4 +9x^3+11x^2+4x-6


show the calculations........ill markas brainliest who will show proper calculation

Answer 1

Answer:

$p( x) = 2 {x}^{4} + 9x {}^{3} + 11 {x}^{2} + 4x - 6 \\ p ( - 3)= 2 {( - 3)}^{4} + 9 {( - 3)}^{3} + 11( - 3) {}^{2} + 4( - 3) - 6 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: = 162 - 243 + 90 - 12 - 6 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: = - 9$