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October 31, 2014

Posted by **Mohamed shiko** on Monday, January 17, 2011 at 1:31pm.

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

- math -
**Reiny**, Monday, January 17, 2011 at 1:43pmAre 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

- math -
**helper**, Monday, January 17, 2011 at 1:47pmyou 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

- Algebra 2 -
**Emily**, Sunday, January 8, 2012 at 10:54pmComplete the square to solve -x^2-7x+6=-2x^2

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