Algebraic Expression Grade 7 NCERT Ex. 12.3

Algebraic Expressions and Polynomials

Find the sum of the following algebraic expressions : 7a^(2) - 5a + 2 , 3a^(2) - 7 , 2a + 9 , 1+ 2a - 5a^(2)

Write the algebraic expressions for the following. 12 more than the sum of two-thirds of a number a and four-fifths.

Identify monomials, binomials and trinomials from the following algebraic expressions: 7b^(2) xx a^(3)b

Write the number of terms in each of the following algebraic expressions : 2x-:2y-7x^(2)+3

Identify the monomials, binomials, trinomials and quadrinomials among the following algebraic expressions: (i) -7\ (ii) x+y\

Write all the terms of each of the following algebraic expressions: (i) 3x (ii) 2x-3

Write down the algebraic expression whose terms are : a^(2),2b^(2), 3c^(2),7

Write down the algebraic expressions whose terms are : 3a, -4b, 7c

Write down the algebraic expression whose terms are : -3 5x^(2),-7x^(5)