Q. Solve for x. Enter the solutions from least to greatest.6x2−12x−210=0lesser x=greater x=
Write Equation: Write down the given quadratic equation.6x2−12x−210=0We need to find the values of x that satisfy this equation.
Factor GCF: Factor out the greatest common factor (GCF) from the quadratic equation.The GCF of 6x2, −12x, and −210 is 6.6(x2−2x−35)=0
Factor Quadratic Expression: Factor the quadratic expression inside the parentheses.We need to find two numbers that multiply to −35 and add up to −2.The numbers −7 and 5 satisfy these conditions because (−7)×5=−35 and −7+5=−2.So we can write the factored form as:6(x−7)(x+5)=0
Solve for x: Set each factor equal to zero and solve for x.First factor: x−7=0Adding 7 to both sides gives us x=7.Second factor: x+5=0Subtracting 5 from both sides gives us x=−5.
Write Solutions: Write down the solutions in ascending order.The lesser value of x is −5, and the greater value of x is 7.
More problems from Solve a quadratic equation by factoring