Question

if A = 7x2 + 5xy - 942, B+ - 4x² + xy + 5y and C = 4y - 3x- 6xy then show that
A + B + C = 0
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Answer 1

Answer:

I THINK YOUR IS WRONG

I HAVE CORRECT IT SEE AT ONCCE

Step-by-step explanation:

A=7x²+5xy-9y²

B=-4x²+xy+5y²

c=4y²-3x²-6xy

now,

A+B+C=7x²+5xy-9y²-4x²+xy+5y²+4y²-3x²-6xy

=7x²-4x²-3x²+5xy+xy-9y²+4y²+5y²-6xy

=7x²-7x²+6xy-6xy-9y²-9y²

=0.

:. A+B+C=0 PROVED

Answer 2

Answer:

hiii......

please mark me as brilliant...