Question

Calculati :
 (x² -x+2)² +x²(-x²+2x-5)

Answer 1

=$x^{4}+ x^{2} +4-2 x^{3}+4 x^{2} -4x+ x^{2} - x^{2} +2x-5= x^{4}-2 x^{3}+5 x^{2}$-2x-1