SOLUTION: SQUARING AND SUBSTITUTION 4M+ 8SQUARE ROOT M -5=0 4M PLUS 8 SQUARE ROOT SIGN WITH M UNDER IT -5=0 solve thanks

Question 100596: SQUARING AND SUBSTITUTION
4M+ 8SQUARE ROOT M -5=0
4M PLUS 8 SQUARE ROOT SIGN WITH M UNDER IT -5=0
solve

thanks
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
4M-5=-8sqrt(M) ... squaring gives 16M^2-40M+25=64M

16M^2-104M+25=0 ... ...

M=25/4 and M=1/4 ... sqrt can be +-