Thursday

April 17, 2014

April 17, 2014

Posted by **tracy** on Monday, October 24, 2011 at 9:42pm.

the square root of 6m minus 5 = m

A. {1}

B. {5}

C. {1, 5}

D. no real solution

I think its B

- algebra,math -
**Reiny**, Monday, October 24, 2011 at 10:22pm√(6m) - 5 = m

√(6m) = m+5

square both sides

6m = m^2 + 10m + 25

m^2 + 4m + 25 = 0

m = (-4 ± √-84)/2

no real solution

if you think it is B), why not check it

LS = √30 - 5

RS = 5

mmmhhh

**However**, if you meant:

√(6m-5) = 5

then 6m-5 = 25

6m = 30

m = 5

See what happens if you don't use brackets to avoid ambiguity?

**Related Questions**

Math help - Write an equation with a variable on both sides of the equal sign ...

Math help please Ms. Sue agian - Write an equation with a variable on both sides...

math, correction plz - Can someone correct these for me.PLZ Problem#1 Directions...

Algebra Please Help/ Check - why does the equation x^2=-9 has no real solution? ...

MATH PLEASE CHECK IT!!2 - m-2/m-5*m+5/m-2=-1 If your problem is this: (m - 2)/(m...

algebra - when you are given two equations which are both true,and you are asked...

algebra - 5x-2y=-5 y-5x=3 substitution Substitute 5x +3 for y in the first ...

How do I do this.?(Math.) - Use the Substitution method to solve the system of ...

algebra - Write a quadratic equation in the variable x, having the given numbers...

Inter. Algebra - Another problem plz help Count Iblis. How do you solve 5/x+2 + ...