Question

simplify 3x(4x-5)+3 and find the value for x=3 explain step by step pleasee

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Answer 1

Answer:

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Answer 2

Answer:

$3x(4x - 5) + 3 \\ 12 {x}^{2} - 15x + 3 \ \\ \bold{ now \: put \: value \: of \: x} \\ = 12 {(3)}^{2} - 15 \times 3 + 3 \\ = 12 \times 9 - 45 + 3 \\ = 108 -45 + 3 \\ = 66$

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