need help

vermonstervt

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Jul 24, 2005
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12
can someone show me how to do this problem x-xy if x=-2 y=-3 I am just dumb when it comes to this I am studying for My ged and math is my worst subject thanks
 

stapel

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Just plug the numbers in for the values, and simplify. For instance:

Evaluate ab + 3c for a = 2, b = -4, c = 5.
You'd plug "2" in for "a", "-4" in for "b", and "5" in for "c", and simplify:

__(2)(-4) + 3(5) = -8 + 15 = 7

Follow the same procedure with your example.

Eliz.
 

vermonstervt

New member
Joined
Jul 24, 2005
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12
is this correct

x-xy if x=-2 y=-3
(-2)-(-2)(-3)
-2-6=-8
 

stapel

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Yes. The order of operations says that the multipication must be done first, so you have to handle the -2 times the -3 first, giving you a +6. But then you're subtracting this from the initial -2, giving you -2 - 6, or -8.

Good work!

Eliz.
 
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