1-Zredukuj wyrazy podobne po wykonaniu mnozenia. a)(9x+2)(-3x+1)+(-2x-3)(x+1)= b)(2x-3)(2x+6)-(x-5)(x+4)= zad.2-oblicz sprytnie a)16p²+32pr+16r²= b)0,01p²-1,21r²= c)102×98=

a)(9x+2)(-3x+1)+(-2x-3)(x+1)= -27x²+9x-6x+2-2x²-2x-3x-3 = = -29x²-2x-1 = 1-29x²-2x b)(2x-3)(2x+6)-(x-5)(x+4)= 4x²+12x-6x-18-(x²+4x-5x-20) = = 4x²-6x-18-x²+x+20 = = 3x²-5x+2 a)16p²+32pr+16r²= (4p+4r)² b)0,01p²-1,21r²= 0,01(p²-121r²) c)102×98= 9996

zad 1 a)=-27x²+9x-6x+2-2x²-2x-3x-2=-29x²-2x b)=4x²+12x-6x-18-x²-4x+5x+20=3x²+7x+2