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Simplification of an Expression

Simplify: a2...

Question

Simplify:
$a^{2} - 2 a + {5 a^{2} - (3 a - 4 a^{2})}$ , then the answer is $10 a^{2} - 5 a$
If true then enter $1$ and if false then enter $0$

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Solution

$S i m p l i f y i n g a^{2} - 2 a + {5 a^{2} - (3 a - 4 a^{2})}, = a^{2} - 2 a + 5 a^{2} - 3 a + 4 a^{2} = 10 a^{2} - 5 a$

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