saracanada
please Help!!!!! Explain



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saracanada
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\[z ^{2}7z+12\]

saracanada
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what the factor ??????????

AravindG
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look here sum of terms is 7 and product is 12 !! try to get two nos who satisfy this !!

AravindG
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gt it ?

AravindG
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so the factorised form is (z4)(z3)