We can't see the operation signs. If all the missing signs are pluses, that simplifies to 12x + 7. If it's something else, please re-submit your question with the operations written out.
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8x^2 + 6x - 5 = 8x^2 + 10x - 4x - 5 = 2x * (4x + 5) - (4x + 5) = (2x -1) * (4x + 5)
8x + 10 = 3x +145x = 4x = 4/5 = 0.8Improved answer:8x+10 = 4x+148x-4x = 14-104x = 4x = 1
30
8x + 8 = 4x 4x + 8 = 0 4x = -8 x = -2
5x-3=2-8x 5x-3+3=2-8x+3 5x=5-8x 5x+8x=5-8x+8x 13x=5 x=5/13