Q1. Add: 3x² - 4xy - 8y², 6xy - 9x² - 3y², 8y² - 6xy - 5x²
Answers
Answered by
2
Given 3 equations are:
- 3x² - 4xy - 8y²
- 6xy - 9x² - 3y²
- 8y² - 6xy - 5x²
We have to add the three of them,
(3x² - 4xy - 8y²) + (6xy - 9x² - 3y²) + (8y² - 6xy - 5x²)
Add the terms which have same coefficients..
⇒ (3x² - 9x² - 5x²) + (6xy - 6xy - 4xy) + (8y² - 9y² - 8y²)
⇒ (-11x²) + (-4xy) + (-9y²)
⇒ -11x² - 4xy - 9y²
⇒ - (11x² + 4xy + 9y²)
Similar questions