FOILing (4x - 3)(2x + 5)
    F Take the product of the First terms 4x.2x = 8x2
    O Take the product of the Outer terms 4x.5 = 20x
    I Take the product of the Inner terms (-3).2x = -6x
    L Take the product of the Last terms (-3).5 = -15
    Then add them all up 8x2 + 20x - 6x - 15  =  8x2 + 14x - 15

Enter this as   8*x^2 + 14*x - 15


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