It cannot be simplified any further, so it is:
x² + 2x - 35
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14x2 - 39x - 35 = (7x + 5)(2x - 7)
X2 + 2X - 35 What two factors of - 35 add up to 2? (X - 5)(X + 7) -----------------
The answer is 35. 2x2-6x+15 2(-2)2-6(-2)+15 8+12+15 35. And this is not calculus...
4x+35-2x+25 = 6 2x+60 = 6 2x = 6-60 2x = -54 x = -27
2x+3x=35 5x=35 x=7