Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Which value for the constant 
d makes 
x=-2 an extraneous solution in the following equation?

{:[sqrt(6-15 x)=5x+d],[d=]:}

Which value for the constant d d makes x=2 x=-2 an extraneous solution in the following equation?\newline615x=5x+dd= \begin{array}{l} \sqrt{6-15 x}=5 x+d \\ d= \end{array}

Full solution

Q. Which value for the constant d d makes x=2 x=-2 an extraneous solution in the following equation?\newline615x=5x+dd= \begin{array}{l} \sqrt{6-15 x}=5 x+d \\ d= \end{array}
  1. Given Equation: We are given the equation 615x=5x+d\sqrt{6-15x} = 5x + d and we need to find the value of dd that makes x=2x = -2 an extraneous solution. An extraneous solution is a solution that is derived from an algebraic manipulation but is not a true solution to the original equation. To find dd, we will substitute x=2x = -2 into the equation and solve for dd.
  2. Substitute x=2x = -2: Substitute x=2x = -2 into the left side of the equation 615x\sqrt{6-15x}.\newlineCalculation: 615(2)=6+30=36\sqrt{6-15(-2)} = \sqrt{6 + 30} = \sqrt{36}
  3. Simplify the Square Root: Simplify the square root.\newlineCalculation: 36=6\sqrt{36} = 6
  4. Substitute x=2x = -2 (Right Side): Now, substitute x=2x = -2 into the right side of the equation 5x+d5x + d.\newlineCalculation: 5(2)+d=10+d5(-2) + d = -10 + d
  5. Set the Two Sides Not Equal: Since x=2x = -2 is supposed to be an extraneous solution, the two sides of the equation should not be equal. Therefore, we set the simplified left side (which is 66) not equal to the simplified right side (10+d-10 + d).\newlineEquation: 610+d6 \neq -10 + d
  6. Solve for d: Solve for d by adding 1010 to both sides of the inequality.\newlineCalculation: 6+10d6 + 10 \neq d\newline16d16 \neq d
  7. Extraneous Solution: We have found that for x=2x = -2 to be an extraneous solution, dd cannot be equal to 1616. Therefore, any value of dd other than 1616 will make x=2x = -2 an extraneous solution to the equation 615x=5x+d\sqrt{6-15x} = 5x + d.

More problems from Does x satisfy the equation?