In deze les zitten 13 slides, met interactieve quiz en tekstslides.
Lesduur is: 50 min
Onderdelen in deze les
Which exercises should we discuss on the board?
Slide 1 - Woordweb
Solving quadratic equations
You know two methods of solving quadratic equations:
- Cards
- A x B = 0, then A = 0 or B = 0
When should you use each method?
Slide 2 - Tekstslide
Solving quadratic equations
1. Can you use cards?
(You can use cards if the equation contains only 1 variable)
Yes? Solve using cards.
No? Go to step 2.
Slide 3 - Tekstslide
Solving quadratic equations with cards
Use the balance method (add/subtract the same amount, divide/multiply by the same number , take the square root on both sides of the equal sign, don't forget the second solution)
Slide 4 - Tekstslide
Solving quadratic equations
2. Is one side of the equation equal to 0?
Yes? Go to step 3.
No? Reduce to zero
Slide 5 - Tekstslide
Reduce to zero
Use the balance method (add/subtract the same term on both sides of the equal sign).
Slide 6 - Tekstslide
Solving quadratic equations
3. Is the equation already in the form A x B = 0?
Yes? Go to step 4
No? Factorise the binomial or trinomial.
Slide 7 - Tekstslide
Factorise binomial
Find the largest common factor and place in front of a set of single brackets, fill in the remaining factors inside the brackets.
(See §11.2)
Slide 8 - Tekstslide
Factorise trinomial
Find two numbers that have the number in front of x as a sum and the single numbers as a product. Write as (x + ...)(x + ...).
Lesduur is: 50 min
