Answer:
-7x^3 -12y^2-4y
Explanation:
The -7x^3 is alone so you don't have to worry about adding or subtracting it. You add -7y^2-2y^2-4y^2+y^2 together then you just put the -4y because it's alone.
what is the function of an eyepiece on a microscope?
An eyepiece allows viewing of specimen placed of stage of the microscope
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