5x2 + 3x + 8x2 = 13x2 + 3x = x(13x + 3)
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The given expression can be simplified to: 8x squared +9
8x = 5x+24 8x-5x = 24 3x = 24 x = 8
5x+49 = 8x+13 49-13 = 8x-5x 36 = 3x x = 12
8x + 7
5x + 5 = 8 -3x 5x = 3 -3x 8x = 3 x = 0.375