- If x^2 + 3/x = 10 then x^2 + 1/x^2 =? x is not equal to 3 and the answer is 11?

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Which better: AUTOCAD 3D or AUTODESK INVENTOR ?
For design/ drawing: pipeline, baseline/ metal frame, and pumps..? Why do you need to use L'Hopital's Rule to find the limit below? limâ”¬( The function f is f(x)= (x+4)(x-a), the graph of f is a parabola , a is const. The x coord. is b/w 1 and 3, which is a?
A. -2
B. 1
C. 5
D. 9? For what values of k is the following integral improper? upper bound is k, lower bound is 0. (x)/(x^2-19x+90)dx? Invaders of the european continent are?