He is wrong. we are only looking at the last number which is 4
if we tripple 4 or 4*3 we get 12 which ends in 2, not 9
Step-by-step explanation:
The last step is a little wrong. Lemme show you:
x(x + 2) + (x + 2)
Imagine there is an invisible '1' infront of (x + 2) like this:
= x(x + 2) + 1(x + 2)
Now we can combine the like terms together:
= (x + 1)(x + 2)
This is the correct factorization.
Answer:
x=−2,−8
Step-by-step explanation:
Move terms to the left side. Then set each factor equal to zero.
x=−2,−8
Answer:
Turn everything into fractions. You can also combine like terms.
Step-by-step explanation:
