Q. Solve for x. Enter the solutions from least to greatest.x2−3x−40=0 lesser x=□ greater x=□
Identify the quadratic equation: Identify the quadratic equation to be solved.The given quadratic equation is x2−3x−40=0. We need to find two numbers that multiply to −40 and add up to −3.
Factor the quadratic equation: Factor the quadratic equation.To factor x2−3x−40=0, we look for two numbers that multiply to give −40 and add to give −3. The numbers −8 and 5 satisfy these conditions because −8×5=−40 and −8+5=−3.So, we can write the equation as (x−8)(x+5)=0.
Solve for x using zero product property: Solve for x using the zero product property.If (x−8)(x+5)=0, then either x−8=0 or x+5=0.
Solve the first equation: Solve the first equation x−8=0.Adding 8 to both sides gives us x=8.
Solve the second equation: Solve the second equation x+5=0.Subtracting 5 from both sides gives us x=−5.
Write the solutions in ascending order: Write the solutions in ascending order.The solutions are x=−5 and x=8. In ascending order, the lesser value is −5 and the greater value is 8.
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