A)let x be the set of all 3x3 matrices whose diagonal entries are all 0. with the usual matrix addition and scalar multiplication, is x a vector space?

(b) let y be the set of all 3 x 3 matrices whose diagonal entries add up to 0. with the usual matrix addition and scalar multiplication, is y a vector space?

(c) let z be the set of all polynomials of degree exactly 5. is z a vector space?

d) let v be the set of all 3x3 matrices whose determinant is equal to 0. with the usual matrix addition and scalar multiplication, is v a vector space?

(e) let w be the vector space of all lower triangular 4x4 matrices. what is the dimension of w?

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

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step-by-step explanation:

answer: what are the answer choices?

step-by-step explanation:

i don't see any steps below, sweetheart