Answer :

julie005

Answer:

j=15/24 or j=5/8

Step-by-step explanation:

192j²-240j+75=0

192j²-120j-120j+75=0

24j(8j-5) -15(8j-5)=0

(24j-15) (8j-5)=0

24j-15=0 or 8j-5=0

24j=15 8j=5

j=15/24 j=5/8

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