Question

If f(z)=z4+9z3+35z2-z+4. Find f(-5+ 2 ).​

Answer 1

Answer:

160

Step-by-step explanation:

f(-5+2) = f(-3)

${( - 3)}^{4} + 9 {( - 3)}^{3} + 35 {( - 3)}^{2} - ( - 3) + 4 \\ 81 - 243 + 315 + 3 + 4 \\ 403 - 243 \\ = 160$

Answer 2

Answer:

$f( - 5 + 2) = 0 \\ f = - 5 + 2 = 0 \\ f = 3 \\ f(3) = {3}^{4} + 9( {3}^{3}) + 35( {3}^{2}) - 3 + 4 \\ = 81 + 9 \times 27 + 35 \times 9 - 3 + 4 \\ = 81 + 243 + 315 + 1 \\ = 640$