Question

suma de polinomios paso a paso. ayudaa.

1:
$(a {}^{3} - b {}^{3} ) + (5a {}^{2} - 4ab {}^{2}) + (a {}^{3} - 7ab {}^{2} - b {}^{3) = }$
2:
$( - x {}^{2} + x - 6) + (x {}^{3} - 7x {}^{2} + 5) + ( - x {}^{3} + 8x - 5)$
3:
$(a {}^{3} - 4a + 5) + (a {}^{3} - 2a {}^{2} + 6) + (a {}^{2} - 7a + 4) =$
4:
$( - 7x {}^{2} + 5x - 6) + (8x - 9 + 4x {}^{2}) + ( - 7x + 14 - x {}^{2}) =$
5:
$(a {}^{2} - 3 ab + b {}^{2}) + ( - 5ab + a {}^{2} - b {}^{2}) + (8ab - b {}^{2} - 2 a {}^{2}) =$


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Answer 1

● (a³-b³)+(5a²-4ab²)+(a³-7ab²-b³) =

2a³+5a²-11ab²-2b³

● (-x²+x-6)+(x³-7x²+5)+(-x³+8x-5) =

-8x²+9x-11

● (a³-4a+5)+(a³-2a²+6)+(a²-7a+4) =

2a³'-a²-11a+15

● (-7x²+5x-6)+(8x-9+4x²)+(-7x+14-x²) =

-4x²+6x-1

● (a²-3ab+b²)+(-5ab+a²-5b²)+(8ab-b²-2a²) =

-5b²