Factor the problem first. So for number one, take out a seven to make it 7(x+4) and factor by subtraction of square roots on the bottom to make it (x-4)(x+4) Then, because there are factors of (x+4) on the top and bottom, cancel them out to make it 7/(x-4)
Im guessing restrictions are the values x cannot be. So you take the denominator factors of (x+4)(x-4) and set them equal to zero. x+4=0 and x-4=0.
so x cannot =4, and -4
Hope this helps you answer the next ones!
Answer: Well if the number has no end it must be irrational same as sqrt of 2 or pi
Step-by-step explanation:
The line and parabola intersect at about x=-2 and x=1.5 so the solution is A. x = -2
Use proportions because we know that the triangles are similar.
Cross multiply.
20x=28×5
x=7
answer: 7
The same length, if something is congruent it means they’re the same
