Question

add the given algebraic expressions (a) lm^2+ml^2+30,mn+4lm^2-5ml^2​

Answer 1

Answer:

It is known that, expressions with one term is called monomial, expressions with two terms are binomials, expressions with three terms are trinomials and expression with more than three terms are polynomials.

(i) 7x = Monomial

(ii) 5y−-7z = Binomial

(iii) 3x3−-5x2−-11 = Trinomial

(iv) 1−-8a−-7a2−-7a3 = Polynomial

(v) 5m−-3 = Binomial

(vi) 4 = Monomial

(vii) 3y2−-7y+5 = Trinomial

Step-by-step explanation:

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Answer 2

Using the identity: a² - b² = (a+b)(a-b)

(l+m)² - (l-m)²

= [(l+m)+(l-m)]×[(l+m)-(l-m)]

= [l+m+l-m]×[l+m-l+m]

= [2l]×[2m]

=4lm