An object of height 6 cm is placed at a distance of 20 cm in front of a concave lens of power -8 D. Find the size of the image.

rounding to the nearest thousandth would be 452,000

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!