10 x²+8x-7,3x-13x² and 9-5x+6+x²
Answers
Given:
- 10x² + 8x - 7
- 3x - 13x²
- 9 - 5x + 6 + x²
What To Find:
We have to find the sum of the above three expressions.
Solution:
(10x² + 8x - 7) + (3x - 13x²) + (9 - 5x + 6 + x²)
Remove the brackets,
⇒ 10x² + 8x - 7 + 3x - 13x² + 9 - 5x + 6 + x²
Rearrange the like terms,
⇒ 10x² - 13x² + x² + 8x + 3x - 5x - 7 + 9 + 6
Solve the first like terms,
⇒ -2x² + 8x + 3x - 5x - 7 + 9 + 6
Solve the second terms,
⇒ -2x² + 6x - 7 + 9 + 6
Solve the third terms,
⇒ -2x² + 6x + 8
∴ So, the sum of the expressions is -2x² + 6x + 8.
Given:
10x² + 8x - 7
3x - 13x²
9 - 5x + 6 + x²
What To Find:
We have to find the sum of the above three expressions.
Solution:
(10x² + 8x - 7) + (3x - 13x²) + (9 - 5x + 6 + x²)
Remove the brackets,
⇒ 10x² + 8x - 7 + 3x - 13x² + 9 - 5x + 6 + x²
Rearrange the like terms,
⇒ 10x² - 13x² + x² + 8x + 3x - 5x - 7 + 9 + 6
Solve the first like terms,
⇒ -2x² + 8x + 3x - 5x - 7 + 9 + 6
Solve the second terms,
⇒ -2x² + 6x - 7 + 9 + 6
Solve the third terms,
⇒ -2x² + 6x + 8
∴ So, the sum of the expressions is -2x² + 6x + 8.