Asked by Mohamed shiko
                what is the solution sets of the following
a) 2x^-7x-5
b)5y^-16y+3
c)10x^+5y-6
d)10x^-13x+4
e)12y^-11y-5
f)10c^-21c+9
g)3m^+5m-2
            
            
        a) 2x^-7x-5
b)5y^-16y+3
c)10x^+5y-6
d)10x^-13x+4
e)12y^-11y-5
f)10c^-21c+9
g)3m^+5m-2
Answers
                    Answered by
            Reiny
            
    Are these equations equal to zero?
If so, then I noticed that each one factors quite easily.
I will do the last one
g)
3m^2 + 5m - 2 =0
(3m - 1)(m + 2) = 0
3m-1 = 0 or m+2 = 0
m = 1/3 or m = -2
do the others the same way.
You can check your answers by subbing them back in.
e.g. if m = -2
LS = 3(4) + 5(-2) - 2
= 12 - 10 - 2
= 0
= RS
so my answer of m=-2 is correct
    
If so, then I noticed that each one factors quite easily.
I will do the last one
g)
3m^2 + 5m - 2 =0
(3m - 1)(m + 2) = 0
3m-1 = 0 or m+2 = 0
m = 1/3 or m = -2
do the others the same way.
You can check your answers by subbing them back in.
e.g. if m = -2
LS = 3(4) + 5(-2) - 2
= 12 - 10 - 2
= 0
= RS
so my answer of m=-2 is correct
                    Answered by
            helper
            
    you are missing the exponents
if (a) should be 2x^2 - 7x - 5
a) 2x^2 - 7x - 5
does not factor, solve by using the quadratic formula or completing the square
if you are stuck, post your work and someone will help
tutors do not do your homework
  
    
if (a) should be 2x^2 - 7x - 5
a) 2x^2 - 7x - 5
does not factor, solve by using the quadratic formula or completing the square
if you are stuck, post your work and someone will help
tutors do not do your homework
                    Answered by
            Emily
            
    Complete the square to solve -x^2-7x+6=-2x^2
    
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