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2014-09-22T21:06:33+03:00
(3x-5)²=9x²-30x+25
(2x+1)²=4x²+4x+1
9x²-30x+25-(4x²+4x+1)=9x²-30x+25-4x²-4x-1=5x²-34x+24
3 4 3
2014-09-22T21:07:52+03:00
E=9x²-30x+25-(4x²+4x+1)=9x²-30x+25-4x²-4x-1=5x²-34x+24
1 5 1