Question

what must be added to 5 x cube 2 X square + 6 X + 7 to make the sum xcube + 3 x square - x +1?​

Answer 1

Answer:

4x^3-x^2+7x+6

Step-by-step explanation:

A.T.Q

(5x^3+2x^2+6x+7) + Required value =x^3+3x^2-x+1

Required value = (5x^3+2x^2+6x+7) - (x^3+3x^2-x+1)

=4x^3-x^2+7x+6

Answer 2

Answer:

(-4x^3 + x^2 -7x -6)

Step-by-step explanation:

x^3 + 3x^2- x + 1 - (5x^3 +2x^2 +6x +7)= Required Answer

Answer comes out to be (-4x^3 + x^2 -7x -6)