Question

4x⁴ - 3x² + 5x - 6 when x = 4​

Answer 1

Given:-

Polynomial

$4 {x}^{4} - 3 {x}^{2} + 5x - 6$

and the value of x = 4

Solution:-

In the given polynomial, put the value of x = 4

$4 {x}^{4} - 3 {x}^{2} + 5x - 6$

$= 4 {(4)}^{4} - 3 {(4)}^{2} + 5(4) - 6$

= 4×256 - 3×16 + 20 - 6

= 1024 - 48 + 20 - 6

= 1044 - 54

= 990

Hence, the value of the polynomial is 990.