Math, asked by ananya123461, 6 months ago

If A = 7x2 + 5xy - 9y?. B= - 4x2 + xy + 5y and C = 4y? - 3x2 - 6xy then show that
A + B + C = 0.

Answers

Answered by pawankum026

2

Step-by-step explanation:

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