find the value of polynomial 3x³-4x³+7x-5 when x=3 and also when x=-3
Answers
Answered by
6
Answer:
- p (x) = 3x³-4x³+7x-5
p(3) = 3×(3)³ - 4×(3)³ + 7×3 - 5
➡️ 3 × 27 - 4 × 27 + 21 - 5
➡️ 81 - 108 + 21 - 5
➡️ 102 - 113
➡️ -11
p(-3) = 3×(-3)³ - 4×(-3)³ + 7×(-3 )- 5
➡️ 3 ×(- 27) - 4 × (-27) - 21 - 5
➡️ -81 + 108 - 21 - 5
➡️ - 107 + 108
➡️ 1
Similar questions