Question

what's the answer for 8x+5y-42+9y-3x+12z
what's the answer for
$9 {}x^{2} -8y {}^{2} + 7 y{}^{2} - 3x {}^{2}$
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Answer 1

Answer:

sorry I didn't get your question please resend it

Step-by-step explanation:

please mark as brainlist please