What is the value of polynomial 3x-12 at x = 7.

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Solution

Let equation p(x) = 3x - 12
On putting x = 7 ,

p(7) = 3(7) - 12

p(7) = 3×7 - 12
p(7) = 21 - 12
p(7) = 9
Therefore, value of equation 3x-12 at x = 7 is 9.

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