determine the number that must be added to make each of the following a perfect square trinomial 1.ײ+2×+ 2.r²+2r+ 3.ײ-15×+ please answer this.
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A joint is the part of the body where two or more bones meet to allow movement. Generally speaking, the greater the range of movement, the higher the risk of injury because the strength of the joint is reduced. The six types of freely movable joint include ball and socket, saddle, hinge, condyloid, pivot and gliding.
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