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Question

Evaluate the following.

9x2+3x÷2+4 for x=5


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Solution

Finding the value of the algebraic expression

Substituting x=5 in the expression we get,

9x2+3x÷2+4=952+35÷2+4=9×25+15÷2+4=225+7.5+4=236.5

Hence, the value of the algebraic expression at x=5 is 236.5


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