Completely factor the polynomial, if possible. 16x2 – 14x + 1

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The suare root of 9x plus 7 plus the square rot of 2x equall to 7

Which is the focus of a parabola with equation y2=4x

From the top of a tree a bird looks down on a field mouse at an angle of depression of 50°. if the field mouse is 40 meters from the base of the tree, find the vertical distance from the ground to the bird's eyes.