Two binary operations \( \ast \) and \( \oplus \) are defines as \( m \ast n = mn - n - 1 \) and \( m \oplus n = mn + n - 2 \) for all real numbers m, n. Fi...

Assessment: JAMB UTME - Mathematics - 1997 Subject: General Mathematics

Question 1 Report

Two binary operations \( \ast \) and \( \oplus \) are defines as \( m \ast n = mn - n - 1 \) and \( m \oplus n = mn + n - 2 \) for all real numbers m, n.

Find the value of \( 3 \oplus (4 \ast 50) \)

Answer Details
m  ∗  n = mn - n - 1, m  ⊕  n = mn + n - 2
3  ⊕  (4  ∗  5) = 3  ⊕  (4 x 5 - 5 - 1) = 3  ⊕  14
3  ⊕  14 = 3 x 14 + 14 - 2
= 54

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