Marc Feld (born May 8, 1947), better known as Marc Bolan, was the lead singer and songwriter with the band Tyrannosaurus Rex and later T. Rex from 1967 until his death in a car crash in 1977. He is credited by many as having invented glam rock, although fans of David Bowie may disagree.
... this case, a quantity that does not depend on x) to the expression to the left of "=", that will make it a perfect square trinomial of the form x2 + 2xy + y2. Since "2xy" ...