Question

Simplify:

x⁴ − 6x³ + 2x − 7 + 7x³ − x + 5x² + 2 − x⁴

Answer 1

x⁴ − 6x³ + 2x − 7 + 7x³ − x + 5x² + 2 − x⁴
 Rearranging and collectingthe like terms
= (1-1)x⁴ +(− 6+7)x³ + 5x² +(2-1)x-7+ 2
= 0 + x³ + 5x² +x-5
= x³ + 5x² +x-5