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 Forums • GED • Math reasoning Que Thread Closed
 Author Topic Anry Posted - 3 April 2019 17:11  X=3, Y=-3, and Z=5-3xy[to the second power] - -Z/3XZThe fraction is written vertically in the equation, so its clear that only the numerator is negative. The answer is -56, but for the life of me I cant figure out how to apply the order of operations to the fraction. hdbalzac Posted - 5 November 2021 6:21  X = 3, Y = -3, Z = 5

f(X,Y,Z) = -3·X·Y^2 - -Z / 3·X·Z

f(X,Y,Z) = -3·X·Y^2 + Z / 3·X·Z

And using parentheses to make it clearer;

f(X,Y,Z) = -3·X·(Y^2) + (Z / 3)·X·Z

Substituting the numbers 3, -3, 5 given for the variables X, Y, and Z respectively;

f(3, -3, 5) = -3·3·[ (-3)^2 ] + (5 / 3)·3·5 =

-27·9 + 5·5 =

-81 + 25 =

-56. hdbalzac Posted - 5 November 2021 6:24  It looks the dot symbol makes a mess. Herer is the link to the solution:
https://i72.servimg.com/u/f72/19/97/10/39/ged_ma10.png hdbalzac Posted - 5 November 2021 6:39  I later noticed the typo -27 in the reply I gave as the picture on that link which should read -9.

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