Wykonaj mnożenie i zredukuj wyrazy podobne: a)(x+1)(x+2) b)(3a+4)(a-5) c)(2t+1)(1-3c) d)(3ab-7)(3-7ab) e)(-x+y)(5x+6y) f)(x+5y)(7x-y) g)(2x^4-y)(x^4+y) h)(ab-a)(2ab+6a) LEGENDA: ^ - do potęgi(np.x^4 -x do potęgi 4) z góry dziękuje:):)

a)(x+1)(x+2)=x²+3x+2 b)(3a+4)(a-5)=3a²-11a-20 c)(2t+1)(1-3c)=2t-6ct+1-3c d)(3ab-7)(3-7ab)=9ab-21a²b²-21+49ab=58ab-21a²b²-21 e)(-x+y)(5x+6y)=-5x²-xy+6y² f)(x+5y)(7x-y)=7x²+34xy-5y² g)(2x⁴-y)(x⁴+y)=2x⁸+x⁴y-y² h)(ab-a)(2ab+6a)=2a²b²+4a²b-6a²

a)=x^2+2x=x+2=3x+x^2+2 b)=3a^2-15a+4a-20=3a^2-11a-20 c)=2t-6ct+1-3c d)=9ab-21a^2b^2-21=49ab=58ab-21a^2b^2-21 e)=-5x^2-6xy+6y^2=-5x^2-xy=6y^2 g)=-2x^16-2x^4y-x^4y-y^2+-2x^16-3x^4y-y^2 f)=7x^2-xy+35y-25y^2 h)=2a^2b^2=6a^2b-2a^2b-6a^2=2a^2b^2+4a^2b-6a^2