Odpowiedzi

2010-02-18T16:04:05+01:00
(3x-4)²=9x²-24x+16

(r-2x)(r+2x)=r²-4x²

(3p+2m)(3p-2m)=9p²-4m²
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2010-02-18T16:05:31+01:00
(3x-4)²=9x²-24x+16

(r-2x)(r+2x)=r²+4x²

(3p+2m)(3p-2m)=9p²-4m²

Najlepsza Odpowiedź!
2010-02-18T16:06:51+01:00
(3x-4)²= 9x²-24x+16
(r-2x)(r+2x)= r²-2xr + 2xr -4x²= r²-4x²
(3p+2m)(3p-2m)= 9p²-6pm+6pm -4m²=9p²-m²