katehoward1 katehoward1

01-02-2016
Mathematics

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If x=4, calculate the value of: x2 +2x

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taskmasters taskmasters

01-02-2016

If x = 4

x² + 2x = 24

Substitute x by its value

4² + 2(4)
16 + 8 = 24

Answer Link

01-02-2016

We simply need to plug in x = 4 into x² + 2x

So plugging in x = 4, we get:

4² + 2(4)

Simplifying it, we get:

16 + 2(4)
16 + 8
24

When x = 4, x² + 2x will equal 24.

Answer Link

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