Question

solve the equation: 16x^2+24x+9=-16

Answer 1

i suggest you use quadratic formula here ?

Answer 2

... ok we have the quadratic equation there:
\[\LARGE 16x^2+24x+9+16=0\]
\[\LARGE 16x^2+24x+25=0\]
now use its formula:
\[\LARGE {x_{1/2}} = \frac{{ - b \pm \sqrt {{b^2} - 4ac} }}{{2a}}\]
do you know to substitute ? :)

Answer 3

i got 90.5 but it says that its wrong'

Answer 4

\[x = -3/4-i, -3/4+i\]