Question

pls answer fast ..
If x-2 is a factor of 3x⁴-2x³+7x²- 21x + k, then the value of k .....

Answer 1

Step-by-step explanation:

$3 {x}^{4} - 2 {x}^{3} + 7 {x}^{2} - 21x + k \\ \\ \\ \\ x = 2 \\ \\ \\ 3 \times {2}^{4} - 2 \times {2}^{3} + 7 \times {2}^{2} - 21 \times 2 + k \\ 3 \times 16 - 2 \times 8 + 7 \times 4 - 42 + k \\ 48 - 16 + 28 - 42 + k \\ \\ 48 + 28 - 16 - 42 + k \\ 76 - 58 + k = 0 \\ 18 + k = 0 \\ k = - 18$

PLZ MARK AS BRAINLIEST

Answer 2

Hello mate your answer is spooted in the upper image ⬆️⬆️⬆️⬆️

Here ,, you can see that the value of K is -18

NOTE :- I had written the 0 before the polynomial

Hope it helps you

Thnxs for seeing my answer