Bonsoir.
A = 5/3 - 7/3 x 9/4
= 5/3 - 63/12
= 5/3 - 21/4
= 20/12 - 63/12
= - 43/12.
B = √45 - 12√5
= √9 x 5 - 12√5
= 3√5 - 12√5
= - 9√5
J'espère avoir pu t'aider.
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Bonsoir.
A = 5/3 - 7/3 x 9/4
= 5/3 - 63/12
= 5/3 - 21/4
= 20/12 - 63/12
= - 43/12.
B = √45 - 12√5
= √9 x 5 - 12√5
= 3√5 - 12√5
= - 9√5
J'espère avoir pu t'aider.