Question

what shuld be added to 3l³+2l²+lm to get l²-3lm.
give full solution​

Answer 1

Answer:

-4lm-4l²

Step-by-step explanation:

Let the number be x

3l³+2l²+lm+(x)=l²-3lm

x=l²-3lm-(3l²+2l²+lm)

x=l²-3lm-3l²-2l²-lm

x=(-4lm-4l²)

-4lm-4l² should be added to 3l²+2l²+lm to get l²-3lm