Question

(X+3)³

(2x+5)³

(X+3)⁴

Answer 1

resposta da 1=27x
resposta da 2=42x
resposta da 3=81x

Answer 2

(x + 3)³ = (x + 3)²(x + 3) = x² + 6x + 9(x + 3) = x³ + 6x² + 9x + 3x² + 18x + 27

x³ + 6x² + 3x² + 9x + 18x + 27 =

x³ + 9x² + 27x + 27

(2x + 5)³ = (2x + 5)²(2x + 5) = 4x² + 20x + 25(2x + 5) =

8x³ + 40x² + 50x + 20x² + 100x + 125 =

8x³ + 60x² + 150x + 125

(x + 3)⁴ = (x + 3)²(x + 3)² = (x² + 6x + 9)(x² + 6x + 9) =

x⁴ + 6x³ + 9x² + 6x³ + 36x² + 54x + 9x² + 54x + 81 =

x⁴ + 6x³ + 6x³ + 9x² + 36x² + 9x² + 54x + 81 =

x⁴ + 12x³ + 54x² + 54x + 81