Respuesta :
Answer:
x = {-10, 10} (Algebraic)
Step-by-step explanation:
Simplifying
4x2 = 400
Solving
4x2 = 400
Move all terms containing x to the left, all other terms to the right.
Divide each side by '4'.
x2 = 100
Simplifying
x2 = 100
Take the square root of each side:
x = {-10, 10}
Answer:
Algebraically, x=5
Step-by-step explanation:
First take the square root from both sides to cancel out 4x^2
4x=sqrt(400)
Then divide 20 by 4
x=20/4
You should get x=5
