Evaluating Expressions Practice Question

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Algebra expression 5x^2y
Question 2
Evaluate the following expression when x= -3 and y= 2.

Answer

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A. 60
B. -60
C. -90
D. 90
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Step by Step Solution 

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Step 1
First, substitute x with -3. Remember to put brackets around -3.
Substitute x with -3
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Step 2
Now, (-3)2 is equals to (-3)(-3). Multiplying -3 with -3 gives 9.
(-3)^2 is equals to 9
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Step 3
Next, multiply 5 with 9. You will get 45.

The expression is now 45y.
Multiply 5 with 9. This gives 45.
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Step 4
Next, substitute y with 2.
Substitute y with 2
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Step 5
Finally, multiply 45 with 2. You will get 90. Therefore, the answer is D.
Multiply 45 with 2. This gives 90.
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