Question

calcule a)

(-6x) + (-2x)


b) (+4ab) - (-2ab)


c) (-2xy) - (-xy)


d) 4ab . (-2a²)


e) (-3x²) . (-5x³y²)​

Answer 1

Calcule a) (-6x) + (-2x) = - 6x - 2x = - 8x _____________ b) (+4ab) - (-2ab) = 4ab + 2ab = 6ab _____________ c) (-2xy) - (-xy) = - 2xy + xy = - xy ____________ d) 4ab . (-2a²) = -2.4 . a.a^2 . b = - 8a^3.b ______________ e) (-3x²) . (-5x³y²)​ = - 3.(-5). X^2.x^3 . y^2 = + 15.x^5.y^2