How to calculate (2x + 1) & # 178; - (x + 3) (3-x) = 6x?

How to calculate (2x + 1) & # 178; - (x + 3) (3-x) = 6x?


(2x+1)²-(x+3)(3-x)=6x
4x²+4x+1 - 9 +x² -6x = 0
5x² -2x - 8 = 0
X = 2 ± root (4 + 160) / 10
=(2 ± 2 root number 41) / 10
=5 (1 ± root 41)
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