Well, darling, to solve this little equation, you simply need to isolate the variable x. First, you'll want to subtract 9 from both sides to get -5x = -5. Then, divide by -5 on both sides to find x = 1. Voilà, problem solved!
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5x + 4 - 3x + 5 + 2x - 9 = 4x
25x2 + 40x + 16 = 25x2 + 20x + 20x + 16 = 5x(5x + 4) + 4(5x + 4) = (5x + 4)(5x + 4) or (5x + 4)2
5x = 5 times 9, 2y = 2 times 4 so 45 - 8 ie 37
5x² - 18x + 9 = (5x² - 15x) - (3x - 9) = 5x(x - 3) - 3(x - 3) = (5x - 3)(x - 3).
5x - 9 = 4x 5x - 4x - 9 = 4x - 4x x - 9 = 0 x - 9 + 9 = 0 + 9 x = 9