Question

if x=2-9^2+3^4
then x3-2x^2+x-68=?​

Answer 1

Answer:

answer:- -66

HOPE U HELP THIS.....

Step-by-step explanation:

$x = 2 - {9}^{2} + {3}^{4} \\ x = 2 - 81 + 81 \\ x = 2 \\ \\ \\ \\ {x}^{3} - {2x}^{2} + x - 68 \\ = {2}^{3} - 2 \times {2}^{2} + 2 - 68 \\ = 8 - 8 + 2 - 68 \\ = 0 - 66 \\ = - 66$

Answer 2

Answer: -66

Step-by-step explanation:

Given :- x = 2 - 9² + 3⁴

=> x = 2 - 81 + 81

=> x = 2

Now, x³ - 2x² + x - 68 = (2)³ - 2(2)² + (2) - 68

= 8 - 8 + 2 - 68

= -66