Please help. 100 points + brainliest IMPORTANT NOTE: the "*" sign in the equations means it is the end point of the square root sign.

Solve the following equations:

1) Solve for x: √12* (√3* - x) = 15

2) Solve for x: √3x - 1* = 7 What is the root? If there is no root, choose none.

3) Solve for x: √3x* + 1 = 7 What is the root? If there is no root, choose none.

4) Solve for x: 3√x* + 1 = 7 What is the root? If there is no root, choose none.

5) Solve for x: √2y - 5* + 4 = 8 What is the root? If there is no root, choose none.

6) Solve for z: √z^2 + 5* - 2 = z What is the root? If there is no root, choose none.