Set Equation Equal: First, we need to bring all terms to one side of the equation to set it equal to zero.10b2−15b−(8b−12)=0
Distribute Negative Sign: Now, distribute the negative sign to the terms inside the parentheses. 10b2−15b−8b+12=0
Combine Like Terms: Combine like terms.10b2−23b+12=0
Find Factoring Numbers: Next, we need to factor the quadratic equation. We are looking for two numbers that multiply to 10×12 (120) and add up to −23.
Write Factored Form: The numbers that satisfy these conditions are −20 and −3 because −20×−3=120 and −20+−3=−23.
Factor by Grouping: Now we can write the factored form using these two numbers. 10b2−20b + −3b+12 = 0
Final Factored Form: Factor by grouping. Take out the common factor of 10b from the first group and −3 from the second group.10b(b−2)−3(b−2)=0
Final Factored Form: Factor by grouping. Take out the common factor of 10b from the first group and −3 from the second group.10b(b−2)−3(b−2)=0 Since both groups contain the common factor (b−2), we can factor it out.(b−2)(10b−3)=0