[tex]a {}^{2} - b {}^{2} =32 \\ (a + b)(a - b) = 32 \\ 8(a - b) = 32 \\\boxed{\boxed{ a - b = 4}}[/tex]
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[tex]a {}^{2} - b {}^{2} =32 \\ (a + b)(a - b) = 32 \\ 8(a - b) = 32 \\\boxed{\boxed{ a - b = 4}}[/tex]
Resposta: A-B vale 4.