Question

From the sum of x² +x+1 and x² –x + 1 , subtract –x² – x +1​

Answer 1

Answer:

Step-by-step explanation:

Sum of x² + x + 1 and x² - x + 1

= x² + x + 1 + x² - x + 1

= 2x² + 2 (∵ x - x = 0)

Now,from 2x² + 2 subtract - x² - x + 1

= 2x² + 2 - ( - x² - x + 1 )

= 2x² + 2 + x² + x - 1 ( ∵ - × - = + , - × + = - )

= ( 2x² + x² ) + x + ( 2 - 1 ) ( ∵ like terms adding )

= 3x² + x + 1 is the answer.