quadratics

Question 1

how to you complete the square when the a number before the brackets

Answer 1

you have to put it outside brackets and the last number

Question 2

how do you find the roots of a quadratic

Answer 2

set the function or y equal to zero

Question 3

how do you find the minimum point

Answer 3

complete the square on the function

Question 4

how do you solve hidden quadratics

Answer 4

set another number equal to whatever your trying to remove then rewrite the quadratic but don’t forget to put it back into the old equation

Question 5

how to sketch quadratics

Answer 5

find the y intercept by making x equal to zero then the root by setting y equal to zero then find the turning point by completing the square

Question 6

how do you find a quadratic equation from a graph

Answer 6

put k on the outside of the too roots in brackets equal to zero then put in the y intercept and set x to zero to find k

Question 7

what does it mean if the discriminant is greater then 0

Answer 7

2 distinct roots

Question 8

what does it mean if the discriminant is equal to 0

Answer 8

one root

Question 9

what does it mean if the discriminant is less that 0

Answer 9

no real roots