MATHEMATICS

JAMB 2009 - Question 20

Mathematics 2009 JAMB Past Questions - Question 20: If m*n=n-(m+2) for any real number m and n .find the value of 3*(-5).

If m*n=n-(m+2) for any real number m and n .find the value of 3*(-5).
A:
B:
C:
D:
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Correct Answer

C

Explanation

if m x n = n (n-(m+2)3*(-5)= -5- (3+2)= 5-5 = -10To find the value of 3 * (-5) using the given equation, we substitute m = 3 and n = -5 into the equation:m * n = n - (m + 2)3 * (-5) = (-5) - (3 + 2)-15 = -5 - 5-15 = -10Therefore, the value of 3 * (-5) is -15.