Question

How do you simplify x2+x−122x2−3x−9?

Answer 1

Answer :

$- 121x {}^{2} - 2x - 9$

Step by step explanation :

$x {}^{2} + x - 122x {}^{2} - 3x - 9$

Collect the like terms. If a term doesn't have a coefficient, it is considered that the coefficient is 1

$= > 1x {}^{2} - 122x {}^{2} + x - 3x - 9$

Collect the like terms by subtracting their coefficients

$= > (1 - 122)x {}^{2} + x - 3x - 9$

Calculate the difference

$= > - 121x {}^{2} + x - 3x - 9$

Collect the like terms. If a term doesn't have a coefficient it is considered that the coefficient is 1.

$= > - 121x {}^{2} + 1x - 3x - 9$

Collect the like terms by subtracting their coefficients

$= > - 121x {}^{2} + (1 - 3)x - 9$

Calculate the difference

$= > - 121x {}^{2} - 2x - 9$