Q. Solve the equation for all values of x.∣2x+2∣+2=3xAnswer: x=
Isolate absolute value: We have the equation ∣2x+2∣+2=3x. To solve for x, we first need to isolate the absolute value expression on one side of the equation.Subtract 2 from both sides of the equation to isolate the absolute value.∣2x+2∣+2−2=3x−2∣2x+2∣=3x−2
Split into two equations: Now we have ∣2x+2∣=3x−2. The absolute value equation can be split into two separate equations, because the expression inside the absolute value can be either positive or negative.The two cases are:1. 2x+2=3x−2 when 2x+2 is positive or zero.2. −(2x+2)=3x−2 when 2x+2 is negative.
Solve first case: Let's solve the first case: 2x+2=3x−2. Subtract 2x from both sides to get x on one side: 2x+2−2x=3x−2−2x2=x−2 Now, add 2 to both sides to solve for x: 2+2=x−2+24=x
Solve second case: Let's solve the second case: −(2x+2)=3x−2.First, distribute the negative sign:−2x−2=3x−2Now, add 2x to both sides to get x on one side:−2x−2+2x=3x−2+2x−2=5x−2Next, add 2 to both sides to isolate the 5x term:−2+2=5x−2+20=5xFinally, divide both sides by −2x−2=3x−20 to solve for x:−2x−2=3x−22−2x−2=3x−23
Check solutions: We have found two potential solutions for x: x=4 and x=0. However, we must check these solutions in the original equation to ensure they do not result from extraneous solutions introduced by squaring the equation.Check x=4 in the original equation:∣2(4)+2∣+2=3(4)∣8+2∣+2=12∣10∣+2=1210+2=1212=12 which is true, so x=4 is a valid solution.Check x=0 in the original equation:x=41x=42x=43x=44 which is not true, so x=0 is not a valid solution.
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