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Q : 4 (a) Simplify $3x(4x-5)+3$ and find its values for

(i) $\small x=3$

Answers (1)

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(a) We have

$3x(4x-5)+3 = 12x^2 - 15x + 3$

Put x = 3,

We get : $12(3)^2 - 15(3) + 3 = 12(9) - 45 + 3 = 108 - 42 = 66$

Posted by

Devendra Khairwa

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