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Mathematics 16 Online
OpenStudy (anonymous):

5a^2 + 5ab - 8a -8b...factor

OpenStudy (anonymous):

@hartnn

hartnn (hartnn):

take 5a common from 1st 2 terms

hartnn (hartnn):

and -8 common from last 2 terms... what u get ?

OpenStudy (anonymous):

5a(a+b) -8(a-b)...is this finished

hartnn (hartnn):

it is 5a(a+b) -8(a+b). now take out a+b common

OpenStudy (anonymous):

(a+b) (5a-8)

hartnn (hartnn):

now you are done.

OpenStudy (anonymous):

what about 5x^2-43x+56

hartnn (hartnn):

O.o 2 numbers with product 5*56 and sum =-43 both are negative.....

OpenStudy (anonymous):

cant find one that goes for both

hartnn (hartnn):

i'll tell u

hartnn (hartnn):

5x^2-35x-8x+56

hartnn (hartnn):

can u factor further ?

OpenStudy (anonymous):

so this is like the problem before this

hartnn (hartnn):

yes. take 5x common from 1st 2 terms ans -8 from last 2....

OpenStudy (anonymous):

(x-7)(5x-8)

hartnn (hartnn):

wow, you are good :) thats correct....

OpenStudy (anonymous):

thanks...are u able to keep working with me tho

hartnn (hartnn):

means ?

OpenStudy (anonymous):

lol huh

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