Question

Simplifique as expressões a seguir:

a) 7x-(-2x+x) + (-3x+5x)
b) 5y²-(-4y²+7y²) + (-y³+9y²-11y²)

Answer 1

a) 7x-2x+x-3x+5x = 8x

b) 5y²-4y²-7y² -y³+9y²-11y² = -8y² - y³