Solve using the Square Root Property 4z^2-20=0

Math
4z2-20=0
Add 20 to both sides of the equation.
4z2=20
Divide each term by 4 and simplify.
Tap for more steps…
Divide each term in 4z2=20 by 4.
4z24=204
Cancel the common factor of 4.
Tap for more steps…
Cancel the common factor.
4z24=204
Divide z2 by 1.
z2=204
z2=204
Divide 20 by 4.
z2=5
z2=5
Take the square root of both sides of the equation to eliminate the exponent on the left side.
z=±5
The complete solution is the result of both the positive and negative portions of the solution.
Tap for more steps…
First, use the positive value of the ± to find the first solution.
z=5
Next, use the negative value of the ± to find the second solution.
z=-5
The complete solution is the result of both the positive and negative portions of the solution.
z=5,-5
z=5,-5
The result can be shown in multiple forms.
Exact Form:
z=5,-5
Decimal Form:
z=2.23606797…,-2.23606797…
Solve using the Square Root Property 4z^2-20=0

Download our
App from the store

Create a High Performed UI/UX Design from a Silicon Valley.

Scroll to top