Evaluare 4a ²+9b²+ c^2 if 2а+ Зb -c = 10
and 6ab- 3bc-2ac = 15
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Answer:
100
Step-by-step explanation:
4a^2+9b^2+c^2 = 2a*2a+3b*3b-c*-c = (2a+3b-c)(2a+3b-c)
= 10*10 = 100
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