Question

Resolver equação do segundo grau...
2x² + 2x = 481

Pfvvv é urgente

Answer 1

$2x^{2} + 2x = 481$

$2x^{2} + 2x - 481 = 481 - 481$

$2x^{2} + 2x - 481 = 0$

$x =\frac{-b\±\sqrt{b^{2} - 4ac} }{2a}$

$x = \frac{- (2)\±\sqrt{(2)^{2} - 4 (2)(-481) } }{2(2)}$

$x = \frac{- 2 \± \sqrt{3852} }{4}$

$x = \frac{-1}{2} + \frac{3}{2} \sqrt{107}$

ou,

$x = \frac{-1}{2} + \frac{-3}{2} \sqrt{107}$