Transcription of ALG Unit 10 Solving Quadratics Notes - Lancaster High School
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ALG Unit 10 Solving Quadratics Notes - Lancaster High School
1 ALGEBRA UNIT 10- Solving quadratic EQUATIONS Solving Quadratics BY factoring (DAY 1) HOW TO SOLVE quadratic EQUATIONS: Step 1: Write equation in Standard Form. Step 2: Factor the quadratic equation. Step 3: After the problem has been factored we will complete a step called the T chart. Create a T separating the two ( ). Step 4: Once ( ) are separated, set each ( ) = to 0 and solve for the variable. Step 5: Check each of the roots in the ORIGINAL quadratic equation. 1. Find the roots: 035r12r2 2. Solve for y: 024y11y2 3. Find the zeroes: 06x5x2 4. Solve for y: 28y3y2 quadratic Equation (Standard Form): 2 5. Find the roots: 30xx2 6. Find the zeros: 35w52 7.
SOLVING QUADRATICS THAT CAN’T BE FACTORED OPTION 2: QUADRATIC FORMULA (DAY 5) Recap: Solve 7p2 12p 4 0 by completing the square Completing the square and factoring are not always the best method to use when solving a quadratic as illustrated above. To remember formula sing/hum the phase below to the “pop goes the weasel song”
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