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F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

Justin has 750 more than eva and eva has 12 less than justin together they have a total of 63 how much money did

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm