l(x)=3-x^2
l(x)=7
x=-2
am i correct?
are you solving
3 - x^2 = 7 ?
if so, then
-x^2 = 4
x^2 = -4
no real solution, but
x = ±2i
l(x)=7
x=-2
am i correct?
3 - x^2 = 7 ?
if so, then
-x^2 = 4
x^2 = -4
no real solution, but
x = ±2i