x^5+x^4
2a^2-32
3x+8+3x^2+8x
+ = + - 32 = - 32 3x + 8 + + 8x = 11x + 8 +
x^5+x^4=0
x^4(x+1)=0
x^4=0 x+1=0
x=0 x=-1