Quadratics and Cubics, SMB-041 By completing the square, solve for `b` given `b^2-10b-125=0.` (3 marks) Show Answers Only `5+-5sqrt(6)` Show Worked Solution `b^2-10b-125` `=0` `b^2-10b+25-150` `=0` `(b-5)^2` `=150` `b-5` `= +-sqrt(150)` `b` `=5+-sqrt(25xx6)` `b` `=5+-5sqrt(6)`