Объяснение:
= (х+4)²-3х(х+4)= (х+4)(х+4-3х)=(х+4)(4-2х)=2(х+4)(2-х)
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Объяснение:
= (х+4)²-3х(х+4)= (х+4)(х+4-3х)=(х+4)(4-2х)=2(х+4)(2-х)