When 'n' is substituted into the expression, the simplification of the above polynomial would be = 12
Calculation using substitution method
The given expression is ;
n²-3n + 8
Given that n = 4
Substitute 4 into the equation,
= 4²-3(4) + 8
= 16 - 12 + 8
= 16- 4
= 12
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