Solve each of the following equations by using the method of completing the square:
`8x^(2)-14x-15=0`

Solve each of the following equations by using the method of completing the square: x^(2)-4x+1=0

Solve each of the following equations by using the method of completing the square: 3x^(2)-x-2=0

Solve each of the following equations by using the method of completing the square: 3x^(2)-2x-1=0

Solve each of the following equations by using the method of completing the square: 5x^(2)-6x-2=0

Solve each of the following equations by using the method of completing the square: x^(2)-6x+3=0

Solve each of the following equations by using the method of completing the square: x^(2)+8x-2=0

Solve each of the following equations by using the method of completing the square: 2x^(2)+5x-3=0

Solve each of the following equations by using the method of completing the square: 7x^(2)+3x-4=0

Solve each of the following equations by using the method of completing the square: sqrt(2)x^(2)-3x-2sqrt(2)=0

Solve each of the following equations by using the method of completing the square: x^(2)-(sqrt(2)+1)x+sqrt(2)=0