Question

(iii) 13x2 - 12y2 ; 6x2 - 8y2​

Answer 1

Answer:

19x2-20y2

Step-by-step explanation:

13x2-12y2+6×2-8y2=19×2-20y2( 2 number sub ka uper ana ha)

Answer 2

Add 13x²-12y² and 6x²- 8y²

Given:

13x²-12y² and 6x²- 8y²

To Find:

The sum of the given two algebraic expressions.

Solution:

To add any two algebraic expressions, we should add the respective coefficient of the variables with the same degree.

In this case we have add the coefficient of x² and y² from the given expression.

13x²-12y² + 6x²- 8y²

= (13+6)x² + (-12+(-8))y²

= (19)x²+ (-12-8)y²

= 19x² + (-20)y²

= 19x² -20y²

Therefore, the sum of 13x²-12y² and 6x²- 8y² is 19x² -20y²

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