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OpenStudy (anonymous):
need help factoring by grouping \[a^2-4ab+7a-28b\]
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OpenStudy (anonymous):
Rearrange, then factorize
OpenStudy (anonymous):
7a -4ab + a2 -28b
OpenStudy (anonymous):
\[a(a+7)-4b(a+7)\]
OpenStudy (anonymous):
a(a+7)
OpenStudy (anonymous):
Clear enough?
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OpenStudy (anonymous):
okay how do we get -28b ?
OpenStudy (anonymous):
\[-4b \times 7\]
OpenStudy (anonymous):
oh okay i see now !!
OpenStudy (anonymous):
thank you!
OpenStudy (anonymous):
yw. need more clarification on somethings?
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OpenStudy (anonymous):
no thank you you have helped so much
OpenStudy (anonymous):
Okay, my pleasure (:
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