(5+2x).(5-2x) atau (5+2i).(5-2i) =
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(5+2x).(5-2x) atau (5+2i).(5-2i) =
1 Jawaban
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1. Jawaban cintyasp
(5+2x).(5-2x)
= (5.5) + (5. (-2x)) + (2x.5) + (2x. (-2x))
= 25 - 10x + 10x - 4[tex] x^{2} [/tex]
= 25 - 4[tex] x^{2} [/tex]