jawaban terlampir..
opsi : B
semoga membantu
m = V18 + V80
m = 3V2 + 4V5
(m - 7V2)(m + 7V2)
= (3V2 + 4V5 - 7V2)(3V2 + 4V5 + 7V2)
= (4V5 - 4V2)(4V5 + 10V2)
= 4V5(4V5 + 10V2) - 4V2(4V5 + 10V2)
= 80 + 40V10 - 16V10 - 80
= 24V10 (B)
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jawaban terlampir..
opsi : B
semoga membantu
m = V18 + V80
m = 3V2 + 4V5
(m - 7V2)(m + 7V2)
= (3V2 + 4V5 - 7V2)(3V2 + 4V5 + 7V2)
= (4V5 - 4V2)(4V5 + 10V2)
= 4V5(4V5 + 10V2) - 4V2(4V5 + 10V2)
= 80 + 40V10 - 16V10 - 80
= 24V10 (B)