How do you evaluate #9( - 7- 7\cdot 7)#?

Answer 1

See a solution process below:

Using the standard order of operations or PEDMAS, you first evaluate the expression within the Parenthesis. The first operation within the parenthesis is the Multiplication:

#9(-7 - color(red)(7) * color(red)(7)) => 9(-7 - 49)#

Next, execute the Subtraction operation within the parenthesis:

#color(red)(7)) => 9(color(red)(-7) - color(red)(49)) => color(red)(7)) => 9(-56)#

Now, complete the evaluation by execution the Multiplication operation:

#color(red)(9)(color(red)(-56)) => color(red)(9) xx color(red)(-56) => -504#

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Answer 2

Genesis Allen

To evaluate 9(-7 - 7 * 7), you first perform the multiplication inside the parentheses, then you apply the operation of subtraction, and finally, you multiply the result by 9.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.