Question

Translate this problem to an equation and solve.
Four times the square of a number is 16. Find the number. @johnweldon1993

Answer 1

4 times the square of a number

the square of a number means x² right?

4 times that means 4x²

If this equals 16 we have

4x² = 16

We can divide both sides by 4...to isolate x²

4x² = 16
---------
4 4

x² = 4

now take the square root of both sides to solve for 'x'

√x² = √4

x = 2

Answer 2

Now we can check it

4x² = 16

we said x = 2

4(2)² = 16
4(4) = 16
16 = 16

so yes it is correct

Answer 3

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