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OpenStudy (anonymous):
what is the answer in this please square this : (a+b+c+d)
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OpenStudy (anonymous):
(a+b+c+d)(a+b+c+d)= a^2 + b^2 + c^2 + d^2 + 2ad+2bc +2 ac + 2cd
OpenStudy (anonymous):
+2bd
OpenStudy (anonymous):
+2ab .. Sorry I forgo
OpenStudy (anonymous):
t
OpenStudy (anonymous):
ty its like square/ing the binomial and trinomial
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