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QUADRATIC FUNCTION & EQUATION (DISCRIMINANT Screenshot (84) (equals to…
QUADRATIC FUNCTION & EQUATION
DISCRIMINANT
equals to 0
a= positive
a=negative
less than 0
a= negative
a = positive
more than 0
a = negative
a= positive
SOLVING
FORMULA
example
COMPLETING THE SQUARE
Example :
Step 1: divide all the terms by a
Step 2 :move c to RHS of equation
step 3: complete the square on LHS. add (b/2)^2 on RHS
step 4: take the square root of both sides of the equation
step 5: add 0.4
FACTORISATION
use gdc.....
GRAPH
a is positive
a is negative
axis of symmetry
vertex equation
vertex or min/max point = (h, k)
min/max value = k
roots can be found from the brackets in the equation
axis of symmetry
