Question

Add : -6x² + 2y² -4 ; 9y² + 3x² + 8 and 4x² - 6y²

Answer 1

Answer:

Addition of three equations gives x² + 5y²+4

Step-by-step explanation:

Given : To add ( -6x² + 2y² -4) , ( 9y² + 3x² + 8 ) and ( 4x² - 6y²)

Solution : ( -6x² + 2y² -4) + ( 9y² + 3x² + 8 ) +  ( 4x² - 6y²)

Opening the brackets, we get

= -6x² + 2y² -4 + 9y² + 3x² + 8  + 4x² - 6y²

Rearranging the like terms,

= -6x² + 3x²+ 4x²+ 2y²+ 9y² - 6y²-4+ 8

= x² + 5y²+4