Identify the monomials, binomials, trinomials and quadrinomials from the following expressions:(i) a2(ii) a2 − b2(III) x3 + y3 + z3(iv) x3 + y3 + z3 + 3xyz(v) 7 + 5(vi) abc + 1(vii) 3x – 2 + 5(viii) 2x – 3Y + 4(ix) xy + yz + zx(x) ax3 + bx2 + cx + dSolution:The monomials, binomials, trinomials and quadrinomials are as follows.(i) a2 is a monomial expression as it contains ONE term only.(ii) a2 − b2 is a binomial expression as it contains TWO terms.(iii) x3 + y3 + z3 is a trinomial expression as it contains three terms.(iv) x3 + y3 + z3 + 3xyz is a quadrinomial expression as it contains four terms.(v) 7 + 5 = 12 is a monomial expression as it contains one term only.(vi) abc + 1 is a binomial expression as it contains two terms.(vii) 3x – 2 + 5 = 3x + 3 is a binomial expression as it contains two terms.(viii) 2x – 3y + 4 is a trinomial expression as it contains three terms.(ix) xy + yz + zx is a trinomial expression as it contains three terms.(x) ax3 + bx2 + cx + d is a quadrinomial expression as it contains four terms