How do you evaluate #(-9)+14#?
1 Answer
There are various way of approaching this. I am going to show you one you may not have seen before.
Split the 14 into
There is no sign to the left of the brackets so it is automatically:
Think of this as
In multiply, if the signs are different then the answer is negative
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Write:
But
so
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~~~~~~~~~~~~ More efficient approach ~~~~~~~~~~~~~~~~~~~~~~
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