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If a=5, b=4...

Question

If $a = 5, b = 4$ then find the value of $2 a + 4 b^{2}$

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Solution

$2 a + 4 b^{2}$

$= 2 \times 5 + 4 \times 4^{2}$

$= 10 + 4 \times 16$

$= 10 + 64 = 74$

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