(9x-9)(9×+9), your finding the difference between two squares. im have some trouble in how to solve it.
1 answer:
Answer: Your answer is 0 (F.O.I.L) first. outer. inner. last. Or you could use what my teacher calls the magic box
Step-by-step explanation:
So for the boxes you multiply for example the top left box you multiply the 9 above it and the 9 to the left or like the top right box you multiply the -9 above it and the 9 on the outside of the box to the left
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A.) the degrees inside the triangles are 50, 70, and 60. you know because 180-120=60
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im not sure if this is correct but i think it is :)
b.) you know that they are similar triangles because they have the same angle degrees.
im not sure if this is correct but i think it is :)