Question

Which of these is a literal equation?

ten minus six equals four

three squared plus four equals ten plus three

x squared minus seven equals y plus four

three time eight minus ten equals three time negative two

Answer 1

they are all literal since you wrote them down

x squared minus seven equals y plus four

is quadratic since it has a squared term

three time eight minus ten equals three time negative two
can be either
3 *(8-10) = 3 * -2
or
(3*8)-10 = 3*2
one is true one is not.

Answer 2

I am guessing the third one. A literal equation is an equation that contains two or more variables. In the third answer choice, you have variable x and variable y.