Question

3x (4x-5)+3 find its value if x=1/2​

Answer 1

Hlo frnd,

Here is your answer -->

Given,

x = 1 / 2

So, 3 (1 / 2) ( 4 ( 1 / 2 ) - 5 ) + 3

3 / 2 ( 2 - 5 ) + 3

-9 + 6 / 2

- 3 / 2

Hope it helps...

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Answer 2

Question :-

$\red{\sf{3x(4x - 5) + 3 \: \: find \: its \: value \: if \: x = \frac{1}{2} } }$

Answer :-

$\implies \: \frac{ - 3}{2}$

Solution :-

We have ,

$\rightarrow \sf{3x(4x - 5) + 3} \\ \\ \sf{ if \: x = \frac{1}{2} } \\ \\ \rightarrow \: 3 \times \frac{1}{2} (4 \times \frac{1}{2} - 5) + 3 \\ \\ \rightarrow \: \frac{3}{2} (2 - 5) + 3 \\ \\ \rightarrow \: \frac{3}{2} \times ( - 3) + 3 \\ \\ \rightarrow \: \frac{ - 9}{2} + 3 \\ \\ \rightarrow \: \frac{ - 9 + 6}{2} \\ \\ \rightarrow \: \frac{ - 3}{2}$