How many trinomials are there?
(i) 4y−7z
(ii) x+y−xy
(iii) 7mn
(iv) z2−3z+8
(v) 1+x+x2
The correct option is B 3
Trinomial means an algebraic expression of three terms.
(v) 1+x+x2 has three terms
Therefore, there are 3 algebraic expressions which are trinomial.