a) 3 5 2x _________ - _________ + _______ = x - 2 x + 2 x - 4 b) ( x⁷ )⁵ : ( x⁴ )⁻³ ______________ = ( x⁹)² * ( x⁹ ) ³ c) x + 3 x² + 2x ______ * ________ = x + 2 x² - 9

3 5 2x _________ - _________ + _______ = x 2 x 2 x - 4 3*2x*(2x-4) 5*x*(2x-4) 2x*x*2x _________ - _________ + _______ = x *2 x *( 2 x - 4) x*2x*(2x-4) x*2x*(2x-4) 12x²-24x 10x²-20x 4x³ _________ - _________ + _______ = x *2 x *( 2 x - 4) x*2x*(2x-4) x*2x*(2x-4) 12x²-24x -10x²+20x + 4x³ _________________________ = x *2 x *( 2 x - 4) 4x³+2x²-4x _________________ = 4x³-8x² b) x35 : x -12 ____________ x18*x27 x47 ___ = x2 x45