Question

Porfavor me diz o resultado dessa soma: X ao quadrado + 2 X - 3 = 0 ??

Answer 1

$x^2+2x-3=0,~onde: \\ \\ a=1,~b=2,~c=-3 \\ \\ \Delta~=b^2-4.a.c \\ \Delta~=2^2-4.1.(-3) \\ \Delta~=4+12 \\ \Delta~=16$

$x= \frac{-b\pm \sqrt{\Delta~}}{2.a} \\ \\ x= \frac{-2\pm \sqrt{16}}{2.1} \\ \\ x= \frac{-2\pm4}{2}$

$x'= \frac{-2+4}{2}= \frac{2}{2}=1 \\ \\ x''= \frac{-2-4}{2}= \frac{-6}{2}=-3$

:))

Answer 2

3x²=0+3 3x²=3 x²=1 x=√1 x=1