Mathematics
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OpenStudy (anonymous):
Factor by grouping. x2 – 6x + 5x – 30
not sure what to do. Sorry I am not good at math and doin online math it doesnt help when am doing it alone :/ plz help :)
13 years ago
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jimthompson5910 (jim_thompson5910):
x^2 – 6x + 5x – 30
(x^2 – 6x) + (5x – 30)
x(x – 6) + (5x – 30)
x(x – 6) + 5(x – 6)
I'll let you finish.
13 years ago
OpenStudy (anonymous):
okay thanks, Do i have to contribute?
13 years ago
jimthompson5910 (jim_thompson5910):
what do you mean
13 years ago
jimthompson5910 (jim_thompson5910):
btw, you have one last step
what is your answer?
13 years ago
OpenStudy (anonymous):
like x times x and x times 6 that type of thing
13 years ago
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jimthompson5910 (jim_thompson5910):
oh you mean distribute
13 years ago
OpenStudy (anonymous):
yeah that sorry
13 years ago
jimthompson5910 (jim_thompson5910):
no you don't distribute because that would be taking a step backwards
13 years ago
OpenStudy (anonymous):
ok
13 years ago
jimthompson5910 (jim_thompson5910):
how would you factor x(x – 6) + 5(x – 6)
13 years ago
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OpenStudy (anonymous):
k let me figure it out im doing it on paper lol
13 years ago
jimthompson5910 (jim_thompson5910):
ok
13 years ago
OpenStudy (anonymous):
would it be (x-6) (x-5)?
13 years ago
jimthompson5910 (jim_thompson5910):
close
13 years ago
jimthompson5910 (jim_thompson5910):
but it's not -5(x-6)
it's +5(x-6)
so it should be (x+5)(x-6) or (x-6)(x+5)
13 years ago
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OpenStudy (anonymous):
oh okay so it positive
13 years ago
jimthompson5910 (jim_thompson5910):
yes
13 years ago
OpenStudy (anonymous):
okay thank you for your help I really apperciate it :)
13 years ago
jimthompson5910 (jim_thompson5910):
np
13 years ago
OpenStudy (anonymous):
I have one question to this problem that I dont quite get
13 years ago
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OpenStudy (anonymous):
what happen to the number 30 from the problem
13 years ago
jimthompson5910 (jim_thompson5910):
5x - 30 turns into 5(x-6) after I factored out the 5
13 years ago
OpenStudy (anonymous):
oh okay I got it now :) thanks
13 years ago