SOLUTION: I need help with this problem: 36m^2 - 9 = 40 36m^2 -9 = 40 36m^2 -9 +9 = 40+9 36m^2 + 0 = 49 36m^2=49 36m^2/36= 49/36 m^2= 49/36 sqr (m^2) = sqr (49/36) m= 7/6 or m=-7/

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I need help with this problem: 36m^2 - 9 = 40 36m^2 -9 = 40 36m^2 -9 +9 = 40+9 36m^2 + 0 = 49 36m^2=49 36m^2/36= 49/36 m^2= 49/36 sqr (m^2) = sqr (49/36) m= 7/6 or m=-7/      Log On


   

Question 162268: I need help with this problem: 36m^2 - 9 = 40
36m^2 -9 = 40
36m^2 -9 +9 = 40+9
36m^2 + 0 = 49
36m^2=49
36m^2/36= 49/36
m^2= 49/36
sqr (m^2) = sqr (49/36)
m= 7/6 or m=-7/6
note when you take square root of number you have two solutions a positive and negative....because remember (-7/6)(-7/6)=49/36
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