exam Maths Puzzle Numerical Ability

Factor:

6x2nd power + x -2

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exam Other Question

tring to find out the angle of this triangle. one leg is 75.69, and the hypoteneuse is 94.154. i need to know what the angle of the other corner is. by using subsitution of linear systems how do you figure out this problem?

x+y=4
-5+2y=-6

PLEASE HELP CUZ IM NOT UNDERSTANING THIS