Question

alguem me ajuda pfvr ( x - 1).( x + 1) + 3 ( x - 1 ) + 3 ( x - 1 ) + 1

Answer 1

( x - 1).( x + 1) + 3 ( x - 1 ) + 3 ( x - 1 ) + 1

(x²  - 1 ) + 3x - 3 + 3x - 3 + 1
x² + 3x + 3x - 3 - 3 + 1 - 1
x² + 6x - 6