Evaluate the Expression: Finding the Value of 5x-6 When x=-2

Question

What will be the result of this algebraic expression:

5x6 5x-6

if we place

x=2 x=-2

Video Solution

Solution Steps

00:00 Set up and solve
00:03 Substitute appropriate values according to the given data and solve
00:06 Be careful with parentheses
00:09 Always solve multiplication and division before addition and subtraction
00:12 Positive times negative always equals negative
00:15 Continue solving according to correct order of operations
00:18 And this is the solution to the question

Step-by-Step Solution

To solve this problem, we will evaluate the algebraic expression 5x6 5x - 6 by substituting the value of x=2 x = -2 into it.

Step-by-step solution:

  • Step 1: Substitute x=2 x = -2 into the expression 5x6 5x - 6 . This gives:

5(2)6 5(-2) - 6

  • Step 2: Perform the operations in the expression. Start with the multiplication:

5(2)=10 5(-2) = -10

  • Step 3: Substitute the result of the multiplication back into the expression:

106 -10 - 6

  • Step 4: Now perform the subtraction:

106=16 -10 - 6 = -16

Therefore, the result of the expression when x=2 x = -2 is 16 -16 .

Comparing this result with the given choices, we conclude that the correct choice is:

16 -16

Answer

16 -16