01-Dados
A=x²-2ax + a²
B=-3x²-5ax-a²
C= -1,5 x ²-4,2 ax-1,9a²
determine:
a)A-B-C =
b)A-B+C=
c)A+B-C=
A=x²-2ax + a²
B=-3x²-5ax-a²
C= -1,5 x ²-4,2 ax-1,9a²
determine:
a)A-B-C =
b)A-B+C=
c)A+B-C=
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Resposta:
a) x²-2ax + a² -(-3x²-5ax-a²) - (-1,5x²-4,2ax-1,9a²)
x²-2ax + a²+ 3x²+5ax+a²+1,5x²+4,2ax + 1,9a²
x²+3x²+1,5x²- 2ax+5ax+4,2ax +a²+a²+1,9a²
5,5x² + 7,2ax + 3,9a²
b) x²-2ax +a² + 3x²+5ax+a²-1,5x²-4,2ax-1,9a²
x²+3x²-1,5x²-2ax+5ax-4,2ax+a²+a²-1,9a²
2,5x²- 1,2ax+0,1a²
c) x²-2ax +a²-3x²-5ax-a²+1,5x²+4,2ax+1,9a²
x²-3x²+1,5x²-2ax-5ax+4,2ax+a²-a²+1,9a²
- 0,5x²+7,2ax +1,9a²