Solve each equation by graphing the related function. If the equation has no real-number solution, write no solution.

1: x^2 + 7=0

2: 3x^2=0

3: 1/4x^2 - 4=0

4:4g^2=25

See each answer below.

1) If we subtract 7 from both sides and try to take the square root, we are taking the square root of - 7. Therefore, there are no solutions.

2) Dividing by 3 and taking the square root gives an answer of 0.

3) Add 4, multiply by 4 and finally take the square root of each side. You will get positive or negative four.

4) Divide by 4 and then take the square root. You have positive or negative 5/2.