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# Subtracting Polynomials Calculator

The polynomial equation is an equation of the form: ax3+bx2+cx+d = 0 (third degree), ax3+bx2+c = 0 (second degree). Subtracting the polynomial equation is quite similar to the addition of equations, but you have to deal with a minus sign. To subtract polynomial equations, first reverse the sign of each term ('+ ' into '-' and '-' into '+') and add equations as usual. Here is an online subtracting polynomials calculator with which you could easily minus one polynomial equation from other.

## Subtract Polynomial Equations

Example: (x^4 - 6x^3 + 3x^2 + 5x - 4) - (3x^3 - 8x^2 - 5x + 6)

The polynomial equation is an equation of the form: ax3+bx2+cx+d = 0 (third degree), ax3+bx2+c = 0 (second degree). Subtracting the polynomial equation is quite similar to the addition of equations, but you have to deal with a minus sign. To subtract polynomial equations, first reverse the sign of each term ('+ ' into '-' and '-' into '+') and add equations as usual. Here is an online subtracting polynomials calculator with which you could easily minus one polynomial equation from other.

Subtracting polynomials can be done by finding the like terms and subtracting those terms according to the symbol of operation.

### Example:

#### Subtract Polynomial Equations of Third Degree :

(x3 + 5x2 + 2x - 4) - (4x3 - 6x2 - 3x + 6)

#### Step 1 :

Multiplying -1 with the second polynomial, -1(4x3 - 6x2 - 3x + 6) like ,
= (x3 + 5x2 + 2x - 4) – 1(4x3 - 6x2 - 3x + 6)
= (x3 + 5x2 + 2x - 4) – 1(4x3) – 1 (–6x2) – 1(–3x) – 1(6)
you will get an ouput like ,
= x3 + 5x2 + 2x - 4 – 4x3 + 6x2 + 3x – 6

#### Step 2 :

Subtracting the terms with the corresponding degree terms, x3 – 4x3 + 5x2 + 6x2 + 2x + 3x – 4 – 6

#### Step 3 :

Finally you will get an output like,
–3x3 + 11x2 + 5x –10