A binary operation ⊕ ⊕ on real numbers is defined by x ⊕ ⊕ y = xy + x + y for any two real numbers x and y. The value of (-34 3 4 ) ⊕ ⊕ 6 is

Assessment: JAMB UTME - Mathematics - 2007 Subject: General Mathematics

Question 1 Report

A binary operation $\oplus$ on real numbers is defined by x $\oplus$ y = xy + x + y for any two real numbers x and y. The value of (- $\frac{3}{4}$ ) $\oplus$ 6 is

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\frac{3}{4}

\frac{45}{4}

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\frac{4}{3}

\frac{3}{4}

Answer Details

x $\oplus$ y = xy + x + y
(- $\frac{3}{4}$ ) $\oplus$ 6 = - $\frac{3}{4.6}$ - $\frac{3}{4}$ + 6
= - $\frac{9}{2}$ - $\frac{3}{4}$ + 6
= - $\frac{3}{4}$

Read lesson note on Binary Operations (JAMB)

Binary Operations

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