Respuesta:
280
Explicación paso a paso:
m Δ n = (m + n)(m - n)
19 Δ 9 = (19 + 9)(19 - 9)19 Δ 9 = 28 x 10
19 Δ 9 = 280
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Respuesta:
280
Explicación paso a paso:
m Δ n = (m + n)(m - n)
19 Δ 9 = (19 + 9)(19 - 9)
19 Δ 9 = 28 x 10
19 Δ 9 = 280