Mi tarea eres en mi cuaderno

is eres correct???

Well if you are trying to say MY HOMEWORK IS IN MY NOTEBOOK...the right way is

Mi tarea ESTA en mi cuaderno.
no eres en mi cuaderno.

hope it helps!

está ,must have accent mark.

eres = means YOU ARE (singular)

Here is the verb ser = to be
yo soy = I am
tú eres = you are
él/ella/Usted = he/she/you(singular & formal) are

nosotros/nosotras somos = we are
vosotros/vosotras sois = you (plural and familiar) are
ellos/ellas/ustedes = they/you-all (plural and formal) are

Learn the forms of the verb first!

Sra

soy, eres, es / somos, sois, son

No, "eres" is not correct in that context. The correct form would be "estás", which is the second person singular form of the verb "estar" (to be). So, the correct sentence would be "Mi tarea está en mi cuaderno," which translates to "My homework is in my notebook."

To determine the correct form of the verb "estar", you need to consider the subject of the sentence. In this case, the subject is "mi tarea" (my homework), which is singular. Therefore, you use the second person singular form "está" instead of "eres".