Simplify the following expression.
x4 + 3x2 - 2x* -5x2 - x + x2 + x +1+7x4

8x^4+x^3-4x^2+1

Step-by-step explanation:

answer4 to the second power is 16

and 4 to the third power is 64,

no because after the troops were pulled many blacks were killed by hangings lynchings and other cruel ways which in a way interrupted the reconstruction of the south and differed from the way abraham lincoln had an idea of reconstruction