Question

x^2 + 7x = –3 using quadratic formula

Answer 1

x=1/2 (-7-sqroot37=-6.54
x=1/2(sqroot 37-7)=-0.45

Answer 2

\[\Large x^2 + 7x = –3\]


\[\Large x^2 + 7x + 3 = 0\]


\[\Large x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\]


\[\Large x = \frac{-(7)\pm\sqrt{(7)^2-4(1)(3)}}{2(1)}\]


\[\Large x = \frac{-7\pm\sqrt{49-(12)}}{2}\]


\[\Large x = \frac{-7\pm\sqrt{37}}{2}\]


\[\Large x = \frac{-7+\sqrt{37}}{2} \ \text{or} \ x = \frac{-7-\sqrt{37}}{2}\]