What should be added to 7a2 + 4a – 9b2
to get -5a2 + 3a - 5b2
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Answer:
-12a²-a+4b²
Step-by-step explanation:
7a²+4a-9b²+x=-5a²+3a-5b²
x =-5a²+3a-5b²-(7a²+4a-9b²)
= -5a²+3a-5b²-7a²-4a+9b²
=-12a²-a+4b²
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