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Mathematics 20 Online
OpenStudy (anonymous):

Factor: 7x - 21

OpenStudy (caozeyuan):

3, since 3m-15=3(m-5)

OpenStudy (anonymous):

3(m-5)

OpenStudy (anonymous):

what about k squared +6k-27

OpenStudy (anonymous):

(k+9)(k-3)

OpenStudy (anonymous):

k^2 +6k-27?

OpenStudy (anonymous):

Factor: y2 - 225

OpenStudy (anonymous):

(y-15)(y+15) by using a^2-b^2=(a-b)(a+b)

OpenStudy (anonymous):

i can factor that..BRB

OpenStudy (anonymous):

k

OpenStudy (anonymous):

is 2 an exponent?

OpenStudy (anonymous):

your welcone

OpenStudy (anonymous):

still early insert name... 😂

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