Question

(vi) 2x2 - 3y2, 5x2 + 6y2 - 3x2 - 4y2

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Answer 1

Answer:

4x^2 - y^2

Step-by-step explanation:

Required sum,

= (2x^2 – 3y^2) + (5x^2 + 6y^2) + (-3x^2 – 4y^2)

Collecting like terms,

= 2x^2 + 5x^2 – 3x^2 – 3y^2 + 6y^2 – 4y^2

Adding like terms,

= (2 + 5 – 3)x^2 + (– 3 + 6 – 4)y^2

= 4x^2 – y^2

I hope help you