show that (5x-4y)^+80xy=(5x+4y)^
please step by step explanation
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Answer:
(i)5xy+5x+4y+4=5x(y+1)+4(y+1)
=(5x+4)(y+1)
(ii)3ab+3a+2b+2=3a(b+1)+2(b+1)
=(3a+2)(b+1)
Step-by-step explanation:
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