Question

|x - 3| + 2|x + 1| = 4​

Answer 1

Step-by-step explanation:

Solution We substitute the value 3 for x in the equation and see if the left-hand member equals the right-hand member. 4(3) - 2 = 3(3)

Answer 2

$\huge\bold{\gray{\sf{Answer:}}}$

Explanation:

Note : Inside mod negative value become positive when comes out.

$|x - 3| + 2 |x + 1| = 4$

$= > x + 3 + 2(x + 1) = 4$

$= > x + 3 + 2x + 2 = 4$

$= > 3x + 5 = 4$

$= > 3x = - 1$

$\bold{= > x = - \frac{1}{3}}$

Function of modulus:-

[tex]f(x) = \begin{cases}

x & \text{if x ≽0} \\

-x & \text{if x <0}

\end{cases}[/tex]