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|x²-9|+|(x+3)(x-5)|=0 rezolvati ecuatia



Răspuns :


x²-9=0

x²=9

x=√9=3

x+3=0

x=-3

x-5=0

x=5

---> |(x-3)(x+3)| +|(x+3)(x-5)=0
----> |x+3|(|x-3|+(x-5|)
---->|x+3|=10---?x=-3
----->|x-3| + |x-5|=0 si de aici e o ecuatie.