Answer:
6.4cm
Step-by-step explanation:
Download the app Microsoft maths app.
It is helpful in maths problems.
-10x +8y
--------------------
-5x - 4y ) 50x^2 - 32y^2
50x^2 + 40xy
-----------------
-40xy - 32y^2
-40xy -32y^2
-------------------
answer is -10x + 8y
It would be the last one to add up to 180 witch is a triangle or supplementary
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