exam
Maths Puzzle
Numerical Ability
I have been asked to carry out the arithmetic opertaion to subtract the following complex numbers:
(9+j7)-(12-j)
Would appriciate some help, thanks.
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exam Other Question
Geometry. The length of a rectangle is 2 inches more than twice its width. If the perimeter of the rectangle is 34 inches, find the dimensions of the rectangle.
How do I simplify 8r^2(r+8)-3r(5r^2-11)-9(3r^2-8r+1)