Răspuns:
a × b = -32√6
a = -4√3
c = -9√2
b = ? | (b × c) = ?
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b = (a × b) ÷ a
b = -32√6 ÷ -4√3
b = (-32) ÷ (-4)√(6 ÷ 3)
b = +8√2 => b = 8√2
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b = 8√2
c = -9√2
(b × c) = ?
— — — — — — — — — –
(b × c) = 8√2 × (-9√2)
(b × c) = [8 × (-9)]√(2 × 2)
(b × c) = -72√4