Question

Efetue as operações.
1) (x²+4x+2) + (x²-2x-2)
2) (x²-5x+3) - (x²-9x-2)
3) (x+2) (x+3)
4) (x-3)²
5) (x+4) (x+2)-8

Answer 1

1) = x² + 4x + 2 + x² - 2x - 2 = 2x² + 2x 

2) = x² - 5x + 3 - x² + 9x + 2 = 4x + 5

3) = x² + 3x + 2x + 6 = x² + 5x + 6

4) = x² - 6x + 9

5) = x² + 2x + 4x + 8 - 8 = x² + 6x