Question

find product using Identities
(7ab-3c) (7ab-3c) ​

Answer 1

Step-by-step explanation:

$(7ab - 3c)(7ab - 3c) = (7ab - 3c)^{2}$

$as \: (a - b)^{2} = {a}^{2} + {b}^{2} - 2ab$

$(7ab - 3c)^{2} = (7ab)^{2} + {3c}^{2} - 2 \times 7ab \times 3c$

$= 49 {a}^{2} {b}^{2} + 9 {c}^{2} - 42abc$

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Answer 2

Step-by-step explanation:

here's explanation for your question