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ICSE-VIII-Mathematics

11: Algebraic Expressions Class 8 Maths

with Solutions -
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  • #2
    Write the number of terms in each of the following polynomials. (i) 5x2 + 3 x ax (ii) ax ÷ 4 - 7 (iii) ax - by + y x z (iv) 23 + a x b ÷ 2. (i) 5x2 + 3 x ax (ii) ax ÷ 4 - 7 (iii) ax - by + y x z (iv) 23 + a x b ÷ 2. (i) 5x2 + 3 x ax (ii) ax ÷ 4 - 7 (iii) ax - by + y x z (iv) 23 + a x b ÷ 2.
    Ans : (i) 5x2 + 3 × ax = 5x2 + 3ax
    ∴ The number of terms in this polynomial = 2 (ii) ax ÷ 4 - 7 = ax/4 - 7
    ∴ The number of terms in this polynomial = 2 (iii) ax - by + y × z = ax - by + yz
    ∴ The number of terms in this polynomial = 3 (iv) 23 + a × b ÷ 2 = 23 + ab/2
    ∴ The number of terms in this polynomial = 2 (i) 5x2 + 3 × ax = 5x2 + 3ax
    ∴ The number of terms in this polynomial = 2 (ii) ax ÷ 4 - 7 = ax/4 - 7
    ∴ The number of terms in this polynomial = 2 (iii) ax - by + y × z = ax - by + yz
    ∴ The number of terms in this polynomial = 3 (iv) 23 + a × b ÷ 2 = 23 + ab/2
    ∴ The number of terms in this polynomial = 2 (i) 5x2 + 3 × ax = 5x2 + 3ax
    ∴ The number of terms in this polynomial = 2 (ii) ax ÷ 4 - 7 = ax/4 - 7
    ∴ The number of terms in this polynomial = 2 (iii) ax - by + y × z = ax - by + yz
    ∴ The number of terms in this polynomial = 3 (iv) 23 + a × b ÷ 2 = 23 + ab/2
    ∴ The number of terms in this polynomial = 2
  • #2-i
    5x2 + 3 x ax
    Ans : 5x2 + 3 × ax = 5x2 + 3ax
    ∴ The number of terms in this polynomial = 2
  • #2-ii
    ax ÷ 4 - 7
    Ans : ax ÷ 4 - 7 = ax/4 - 7
    ∴ The number of terms in this polynomial = 2
  • #2-iii
    ax - by + y x z
    Ans : ax - by + y × z = ax - by + yz
    ∴ The number of terms in this polynomial = 3
  • #2-iv
    23 + a x b ÷ 2.
    Ans : 23 + a × b ÷ 2 = 23 + ab/2
    ∴ The number of terms in this polynomial = 2