Simplify (5a^2-5a-4)-(-5a^2+5a+4)

Math
(5a2-5a-4)-(-5a2+5a+4)
Simplify each term.
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Apply the distributive property.
5a2-5a-4-(-5a2)-(5a)-1⋅4
Simplify.
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Multiply -5 by -1.
5a2-5a-4+5a2-(5a)-1⋅4
Multiply 5 by -1.
5a2-5a-4+5a2-5a-1⋅4
Multiply -1 by 4.
5a2-5a-4+5a2-5a-4
5a2-5a-4+5a2-5a-4
5a2-5a-4+5a2-5a-4
Simplify by adding terms.
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Add 5a2 and 5a2.
10a2-5a-4-5a-4
Subtract 5a from -5a.
10a2-10a-4-4
Subtract 4 from -4.
10a2-10a-8
10a2-10a-8
Simplify (5a^2-5a-4)-(-5a^2+5a+4)

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