Answer:
Step-by-step explanation:
When you have four terms and 3rd degree equation (the highest power is 3) you will want to try to "factor by grouping"
Group together two terms, watch out for the negative signs!
x^3 + 2x^2-5x-10=0
(x^3 + 2x^2) - (5x+10)=0
Find a common factor in each group and factor it out. You're hoping that what is left in the parenthesis is the same in both cases.
x^2(x+2)-5(x+2)=0
Now you can factor out that (x+2) because it is both terms.
x^2(x + 2) - 5(x + 2)=0
~~~~ ~~~~
Pull these out.
What will be left is the x^2 and the - 5 (dont lose that - in front of the 5)
(x + 2)(x^2 - 5) = 0
If all you have to do is factor, then you're done. It is factored. But if you have to "solve" also, then put x+2=0 and x^2-5=0 and solve.
x = -2 and x = +- sqrt5
It would be 25°. also, the interior angles of a triangle always add up to 180 so use that to find answers for other questions like this
Consider the operation is .
Given:
The augmented matrix below represents a system of equations.
To find:
Matrix results from the operation .
Step-by-step explanation:
We have,
After applying , we get
Therefore, the correct option is A.
C is the correct answer
Hope it helps!
Answer:
Mmmmmm... 480 - 60 = 420. 420 is the answer, I guess.