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Mathematics 7 Online
OpenStudy (anonymous):

factor this and show work please help a2 – a – 20

OpenStudy (uri):

a2 – a –20 a^2-5a+4a-20 a(a-5)+4(a+5) (a+5(a+4)

OpenStudy (anonymous):

thank you

OpenStudy (cwrw238):

slight error the last line should be (a - 5)(a + 4)

OpenStudy (uri):

Sorry typo..

OpenStudy (uri):

a2 – a –20 a^2-5a+4a-20 a(a-5)+4(a-5) (a-5(a+4)

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