Question

Simplifique as expressões:
A- X . (2x -1) + X . (1 -3x)
B- Y . ( y +2) -2y . (3 -y)

Answer 1

a)
x * (2x - 1) + x * (1 - 3x) =
2x² - x + x - 3x² =
-x²

b)
y * (y + 2) - 2y * (3 - y) =
y² + 2y - 6y + 2y² =
3y² - 4y