(2x + 3)(x + 1 ) = 2x^2 +5x +3
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(2x + 1) (x + 3) = 2x2 + 7x + 3
2x2 + 7x + 3 = (2x + 1)(x + 3)If 2x2 + 7x + 3 = 0 then:(2x + 1)(x + 3) = 0⇒ (2x + 1) = 0 → x = -1/2or (x + 3) = 0 → x = - 3
if it is -X then X=5 if it was minus X the X=10
(2x + 3)(x + 1)
If: x2+2x-3 = 0 Then: x = 1 or x = -3