plz solve this 2 plz
pzlzzpzzlz
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man2591:
leasten sir
in second number in third step
where is 2 go then
and when we should give plus-minus
plz tell
-6b2x=2*(3x)(b2)
not clear
LET 3x=m and b2= m then it becomes m2-2mn+n2=(m-n)2,put again 3x=m and b2= m,it is (3x-b2)2
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