Question

: Solve, 4x + 5 when, X = 3.​

Answer 1

Answer:

17

Step-by-step explanation:

Let g(x) = 4x + 5

For x = 3,

g(3) = 4 ·3 + 5

⇒ 12 + 5 = 17

Hence value of the equation 4x + 5 when x = 3 is 17

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Answer 2

Answer will be $17$

Let the function $f(x)=4x+5$

where the value of $x=3$

putting the value of $x$ in the given equation

$f(3)=4\times 3+5$

      $=12+5$

        $=17$

So $17$ will be ther answer.

While solving the real value of any polynomial whose variable is given, we simply put the value of that variable in the equation.

Example:

Let's solve the value of $4x+6y+5$ for $x=3\ ,y=2$

$f(x,y)=4\times 3+6\times 2+5$

          $=12+12+5$

          $=29$

Here we simply put the values of $x$ and $y$

Practice more such questions:

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