Odpowiedzi

2010-03-04T11:30:21+01:00
A) (12 1/2² - 1 1/4n² - 1,6 ) - ( 2 1/4m² + 3 3/4n² + 2,4 )
((25/2)²-1¼n²-1⁶₁₀)-2¼m²-3¾n²-2⁴₁₀=
625/4-1¼n²-1⁶₁₀-2¼m²-3¾n²-2⁴₁₀=
156¼-1⁶₁₀-2⁴₁₀-1¼n²-3¾n²-2¼m²=
126¼-4-5n²-2¼m²=
152¼-5n²-2¼m²



b) (1,5x²y - 3/4x² - 15) - (2/5x²y - 2 2/3 - 1/8x²)
1⁵₁₀x²y-3/4x²-15-2/5x²y+2⅔+1/8x²=
1⁵₁₀x²y-4/10x²y-6/8x²+1/8x²-15+2⅔=
1,1x²y-5/8x²-12⅓