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egoroff_w [7]
3 years ago
6

Please help I’ll give brainlyist

Mathematics
2 answers:
lakkis [162]3 years ago
6 0

Answer:

The second choice

Step-by-step explanation:

kati45 [8]3 years ago
3 0

Answer:

+ 6x^{2} and -10y^{2}

Step-by-step explanation:

3x^{2} + 5y^{2} {} + 3 {} + 4y^{2} + 6 = 9x^{2} - y^{2}+ 9

3x^{2} + 9y^{2} {} + 9 {}  = 9x^{2} -  y^{2}+ 9

+ 6x^{2}    -10y^{2}

3x^{2} + 9y^{2} + 6x^{2} + 9 - 10y^{2} = 9x^{2} - y^{2}+ 9

9x^{2} - y^{2}+ 9 = 9x^{2} - y^{2}+ 9

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