Question

(5-2x)^3+(5-2x)^2+3(5-2x)+1​

Answer 1

Step-by-step explanation:

(5-2x)³+(5-2x)²+(5-2x)+1

= [5³-(2x)³-2×5×2x(5-2x)] + [5²-2×5×2x + 2x²] +5- 2x + 1

= [125- 8x³-20x(5-2x)] + [ 25 - 20x +4x²] + 5 - 2x +1

= [ 125 - 8x³ - 100x + 40x² ] + [25 - 20x + 4x²] + 5- 2x + 1

= -8x³ + 40x² + 4x² -100x - 20x -2x +125 +25 +5 +1

= -8x³ + 44x² -122x +156