Question

2x^4–5x^3+x^2+3x+2=?

X=5

Answer 1

`2x^4–5x^3+x^2+3x+2=`

`2 * 5^4–5 * 5^3+5^2+3 * 5+2`

= 2 × 625 – 5 × 125 + 25 + 3 × 5 + 2

=1250 – 625 + 25 + 15 +2

= 1292 – 625

= 667