化简4x2-(2x2+x-1)+(2-x2+3x)
4x²-(2x²+x-1)+(2-x²+3x)
=4x²-2x²-x+1+2-x²+3x
=(4x²-2x²-x²)+(-x+3x)+(1+2)
=x²+2x+3
化简:
4x²-(2x²+x-1)+(2-x²+3x)
=4x²-2x²-x+1+2-x²+3x
=(4x²-2x²-x²)+(3x-x)+1
=x²+2x+1
=(x+1)²
热门标签:
4x²-(2x²+x-1)+(2-x²+3x)
=4x²-2x²-x+1+2-x²+3x
=(4x²-2x²-x²)+(-x+3x)+(1+2)
=x²+2x+3
化简:
4x²-(2x²+x-1)+(2-x²+3x)
=4x²-2x²-x+1+2-x²+3x
=(4x²-2x²-x²)+(3x-x)+1
=x²+2x+1
=(x+1)²