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Mathematics 12 Online
OpenStudy (pflori1234_pop):

need help

OpenStudy (pflori1234_pop):

f(x)= 3x^2 +5x-z g(x)=5x^2 -3x+z m(x)=2x^2-2x

OpenStudy (pflori1234_pop):

Write an expression to represent f(x) + (g(x) -m(x) )

jimthompson5910 (jim_thompson5910):

are those really 'z's in f(x) and g(x)? or are they supposed to be numbers?

OpenStudy (pflori1234_pop):

no they are z's

jimthompson5910 (jim_thompson5910):

ok let's focus on just g(x) and m(x) for now

jimthompson5910 (jim_thompson5910):

are you able to find what g(x) -m(x) is equal to?

jimthompson5910 (jim_thompson5910):

g(x) - m(x) = [ g(x) ] - [ m(x) ] g(x) - m(x) = [ 5x^2 -3x+z ] - [ 2x^2-2x ] I'll let you simplify. Tell me what you get.

OpenStudy (pflori1234_pop):

3x^2 -5x+z?

jimthompson5910 (jim_thompson5910):

g(x) - m(x) = [ 5x^2 -3x+z ] - [ 2x^2-2x ] g(x) - m(x) = 5x^2 -3x+z - 2x^2 + 2x

jimthompson5910 (jim_thompson5910):

you forgot to distribute the negative through all the way

OpenStudy (pflori1234_pop):

how do u do that

jimthompson5910 (jim_thompson5910):

|dw:1471308836810:dw|

jimthompson5910 (jim_thompson5910):

|dw:1471308853741:dw|

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