oblicz (2√5-√10)²= uprosc wyrazenie (x+1)(x-1)+(x+2)(x-2)-(x+3)(x-3)= (y-3x)(3x-y)-(x-5y)(x+5y)+(5x-3)²= oblicz (√2+1)²+(√2-1)²=

oblicz (2√5-√10)²=20 -4√50+10=30-20√2 uprosc wyrazenie (x+1)(x-1)+(x+2)(x-2)-(x+3)(x-3)=x²-1+x²-4-x²+9=x²+4 (y-3x)(3x-y)-(x-5y)(x+5y)+(5x-3)²=-(3x-y)²-(x²-10xy+25y)+25x²-30x+9= =-9x²+6xy-y²-x²+10xy-25y²+25x²-30x+9= =15x²+16xy-26y²-30x+9 oblicz (√2+1)²+(√2-1)²= 2+2√2+1+2-2√2+1=6

oblicz (2√5-√10)²=20-4√50+10=30-20√2 uprosc wyrazenie (x+1)(x-1)+(x+2)(x-2)-(x+3)(x-3)=x²-1+x²-4-x²+9=x²+4 (y-3x)(3x-y)-(x-5y)(x+5y)+(5x-3)²=-y²-9x²+6xy-x²+25y²+25x²-30x+9= 15x²+24y²+6xy-30x+9 oblicz (√2+1)²+(√2-1)²=2+2√2+1+2-2√2+1=6

nie jestem pewna swojej odp.