Math, asked by monachokshi25286, 5 days ago

simplify
3x(4x - 5) + 3
and find value of :
x =  \frac{1}{2}
please answer in brief

Answers

Answered by Nishith15
0

Answer:

\frac{3}{2}

Step-by-step explanation:

=3x(4x-5)+3=12x^2-15x+3=12(\frac{1}{2})^2-15(\frac{1}{2}  )+3\\=12(\frac{1}{4})-\frac{15}{2}+3 \\= \frac{12}{4}- \frac{15}{2}+3} \\= \frac{6}{2}- \frac{15}{2}+3} = \frac{6-15}{2} +3=\frac{-9}{2} +3=\frac{-9+6}{2}\\=\frac{-3}{2} -ANS

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