find the value of 5x2-3x+7 at x: 1/2.
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5(1/2)^2 - 3(1/2)+ 7
=>5 (1/4) -3/2 + 7
=> {5- 3(2) + 7(4)}/4
=> {5 - 6 + 28}/4
=> 27/4
=> 6.75
=>5 (1/4) -3/2 + 7
=> {5- 3(2) + 7(4)}/4
=> {5 - 6 + 28}/4
=> 27/4
=> 6.75
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