3x-5+2x=-49 is the same as 5x=-44 or x=-44/5
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2x+9 = 49-3x 2x+3x = 49-9 5x = 40 x = 8
4x2 + 28x + 49 = 4x2 + 14x + 14x + 49 = 2x(2x + 7) + 7(2x + 7) = (2x + 7)(2x + 7) or (2x + 7)2
49 plus 7 equals 56.
49 plus 10 equals 59.
4849494949505050------394