Question

Reduza os termos semelhantes 1-{x+[2x-(x² -4+2x) +3x²] -3}+x

Answer 1

•1-{x+[2x-(x² -4+2x) +3x²] -3}+x
•1-{x+[2x-x²+4-2x+3x²] -3}+x
•1-{x+[2x²+4] -3}+x
•1-{x+2x²+1}+x
•1-x-2x²-1+x
•-2x²