Q. The equation ax−224x2+25x−47=−8x−3−ax−253 is true for all values of , where is a constant.x=a2aWhat is the value of ?a
Write Equation, Identify Goal: Write down the given equation and identify the goal.The given equation is:(24x2+25x−47)/(ax−2)=−8x−3−53/(ax−2)We need to find the value of a such that the equation holds true for all values of x, where x=2/a.
Simplify Right-hand Side: Simplify the right-hand side of the equation by combining like terms.−8x−3−ax−253 can be rewritten as:−8x−3−(ax−253)Since there are no like terms to combine, we move on to the next step.
Eliminate Fraction: Multiply both sides of the equation by (ax−2) to eliminate the fraction.(24x2+25x−47)=(−8x−3)(ax−2)−53
Expand Equation: Expand the right-hand side of the equation.(−8x−3)(ax−2)−53=−8ax2+16x−3ax+6−53Simplify the right-hand side:−8ax2+(16−3a)x−47
Set Up System: Since the equation must hold for all values of x, the coefficients of the corresponding powers of x must be equal on both sides of the equation.This gives us a system of equations:For the x2 term: 24=−8aFor the x term: 25=16−3aFor the constant term: −47=−47 (which is already satisfied and does not give us information about a)
Solve for a: Solve the first equation from Step 5 for a.24=−8aDivide both sides by −8:a=−3
Verify Solution: Verify the solution by substituting a=−3 into the second equation from Step 5.25=16−3aSubstitute a=−3:25=16−3(−3)25=16+925=25This confirms that a=−3 is the correct solution.
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