Question

from the sum of x² + x+1 and x²-x+1 , Subtract -1/2 x²-2/3x +1​

Answer 1

Answer:

Step-by-step explanation:

$x^{2} +x+1+x^{2} -x+1= 2x^{2} +2\\2x^{2} +2-(-1/2x^{2} -2/3x +1)\\=2x^{2} +2+1/2x^{2} +2/3x -1\\=5/2x^{2} +2/3x+1\\=15x^{2} +4x+6$