If a - b 2- a - b 2-144 and - a - then - a -A- 8B- 3C- 12D- 16

The correct option is B 3 (a̅+b̅)^2+(a̅.b̅)^2=|a|^2|b|^2 ...

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De Morgan's Law

If a × b 2+ a...

Question

If $(\to a \times \to b)^{2} + (\to a . \to b)^{2} = 144$ and $| \to a |$ , then $| \to a |$ =

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(¯ ¯ ¯ a \times ¯ ¯ b)^{2} + (¯ ¯ ¯ a \cdot ¯ ¯ b)^{2} = 144

| a | = 4

| b |

| \to a \times \to b |^{2} + (\to a \cdot \to b)^{2} = 144

| \to a | = 4

| \to b | =

\cup

x^{2} + \frac{1}{x^{2}} = 102

x - \frac{1}{x}

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