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a fost răspuns

2.Descompuneti in factori: 1.[3x+1][48x la puterea a 2-3]-[23x la puterea a 2+1][3x+1]; 2.[4x+3][37x la puterea a 2-13]-[4x+3][x la puterea a 2+12]; 3.[63x la puterea a 2-14][8x+5]-[11-x la puterea a 2][8x+5]; 4.[51x la puterea a 2-43][7x-6]-[7x-6][2x la puterea a 2-7]. Precizare toate parantezele patrate sunt rotunde,nu stiu sa fac parantezele rotunde.

Răspuns :

1)=144x³-9x+48x²-3-(69x³+23x²+3x+1)=
=144x³+48x²-9x-3-69x³-23x²-3x-1=
=75x³+25x²-12x-4

2)=148x³-52x+111x²-39-(4x³+48x+3x²+36)=
=148x³+111x²-52x-39-4x³-3x²-48x-36=
=144x³+108x²-100x-75

3)=504x³+315x²-112x-70-88x-55+8x³+5x²=
=512x³+320x²-200x-125

4)357x³-306x²-301x+258-14x³+49x+12x²-42=
=343x³-294x²-252x+216

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