Simplify $(3 a - 7 b - c)^{2}$ .

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Solution

Simplifying given eq.

$(3 a - 7 b - c)^{2}$

$⟹ (3 a)^{2} + (- 7 b)^{2} + (- c)^{2} + 2 (3 a) (- 7 b) + 2 (- 7 b) (- c) + 2 (- c) (3 a)$

$⟹ 9 a^{2} + 49 b^{2} + c^{2} - 42 a b + 14 b c - 6 c a$

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Similar questions

{(4 a - 7 b)}^{2} - {(3 a)}^{2}

(3 a - 7 b - c)^{2}

= 9 a^{2} + 49 b^{2} + c^{2} - 42 a b + 14 b c - 6 c a

3 a (x - y) - 7 b (y - x)

(3 a - 7 b - c)^{2}

\frac{3 a + 7 b}{3 a - 7 b} = \frac{4}{3}

\frac{3 a^{2} - 7 b^{2}}{3 a^{2} + 7 b^{2}}

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