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What is the sum of the cube of 2x + 1 and the square of x - 1? *​

Sagot :

Answer:

8x³ + 13x² + 4x + 2

Step-by-step explanation:

(2x + 1)³ + (x -1)²

(8x³ + 12x² + 6x + 1) + (x² - 2x + 1)

= 8x³ + 13x² + 4x + 2