15 Simplify: 3x(4x - 5) + 3 and find its values for x=3
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66 is the correct answer brailest mark ❣️❣️‼️
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3x(4x−5)+3=12x^2−15x+3
x=3 gives the value 12(9)−15×3+3
=108−45+3
=66
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