1) Think of planting a tree. You dig the hole, put it in, and fill it back in. Next, you need to attach 3 ropes to the tree to try to keep it straight while it grows.
You put the ropes on it like a "V". Where do you have to put the third rope to
ensure your tree is straight?

at the top of the tree I hope it will help you please follow me

step-by-step explanation:

we are given

we have to simplify it

firstly, we will factor it

now, we can cancel like terms

now, we can combine it

so, we get

specific latent heat of fusion, lf, of a substance is defined as the amount of heat required to change a unit mass of the substance from solid to liquid state, without any change in the temperature.

explanation: