Simplify 4x + 3 = 2x + 8 2x = 5 x =2½
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4x2 - 12x + 9 = 5; whence, 2x - 3 = ±√5, and 2x = 3 ±√5. Therefore, x = ½ (3 ±√5).
(2x - 5)(2x - 5) or (2x - 5) squared
2(2x^2 + 2x - 5)
(2x + 5)(4x2 - 10x + 25)
3x+5 = 2x+13 3x-2x = 13-5 x = 8