A binary operation ⊕ on real numbers is defined by x⊕y = xy + x…

Mathematics JAMB 2007

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 (-3/4)⊕6 is

  • 3/4 checkmark
  • -9/2
  • 45/4
  • -3/4

The correct answer is: A

Explanation

x⊕y = xy + x + y
= -3/4 (6) + (-3/4) + 6
= -9/2 - 3/4 + 6
= (-18-3+3+24) / 4
= 3/4

There is an explanation video available .

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