It can't be factored because its discriminant is less than zero.
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9x squared plus 16 = 0 factored is plus and minus 4/3 i.
(b-4) squared
2(x^2 - 8)
Pull out the common factor of 2 ... 2(y^2+6y-16) Then just factor (y^2+6y-16) ... (y-2)(y+8)
Two plus 3 minus 2 times 1 squared plus 4 times 16 squared minus 4 times 2 is equal to 1,019.