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Anonymous
if you want to factorise it then it will become
(2x + 5)(x + 2)
if it was equal to something then you would work it out differently.
hope this helps
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10 + 9x
9x squared plus 16 = 0 factored is plus and minus 4/3 i.
x + 2x + 6x = 9x
2x+3=9x 3=9x-2x 3=7x x=3/7
(9x2 + 7)(9x2 - 7) = 81x4 - 49