Complete the following statement. -4(9+6) = I
2 answers:
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Translate it
remember that
translates to 
so we can say it equals y
so
translates to 
we want to find the values of x that make it undefined
well, we know that
must be greater than 0
so we do
it is defined for
x-4>0
add 4
x>4
it is defined for all values such that x>4
remember that
so we can say it equals y
so
we want to find the values of x that make it undefined
well, we know that
so we do
it is defined for
x-4>0
add 4
x>4
it is defined for all values such that x>4
Addd 4 to both sides
sqare both sides
x+9=25
minus 9 both sides
x=16
plug it in for x and see
1=1
true
not extraneous
an extraneous root would be x=-34
sqare both sides
x+9=25
minus 9 both sides
x=16
plug it in for x and see
1=1
true
not extraneous
an extraneous root would be x=-34