multiply by 2y/x
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Rearrange: x2 - 10x + 25 = 0ie (x - 5)(x - 5) = 0x = 5Check: x2 = 25; 10x - 25 = 50 - 25 = 25. Job done
x^2 + 10x + 16 = (x + 8)(x + 2)
That depends what the value of x is.
x2 + 10y + 25 doesn't factor neatly. If that was x2 + 10x + 25, it would factor to (x + 5)(x + 5) or (X + 5)2
Do you mean, what is the value of 0.55555...? Call it x. Then 10x = 5.5555... Now subtract x from 10x 10x - x = 5.55555... - 0.55555... 9x = 5 x = 5/9 Done.