Question

What must be subtracted from y4+2y2

-3y+7 to get y3+y2+y-1​

Answer 1

Answer:

$(y {}^{4} + 2y {}^{2} - 3y + 7) - (y {}^{3} + y {}^{2} + y {}^{ - 1} ) \\ = y {}^{4 } - y {}^{3} + y {}^{2} - 3y + 7 - y {}^{ - 1}$

the result of the substarction should be substarcted to get the wished polynomial XD