Identify the numerical coefficients of terms (other than constants) in the following expressions:
(i) 5 – 3t²   (ii) 1 + t + t² + t³   (iii) x + 2xy + 3y   (iv) 100m + 1000n
(v) -p²q² + 7pq    (vi) 1.2 a + 0.8 b    (vii) 3.14r²    (viii) 2(l + b)
(ix) 0.1y + 0.01y²

Solution:

Identifying the numerical coefficients of terms (other than constants) in the following expressions:

(i) -3 is the coefficient of t²

(ii) 1,1 and 1 are the coefficients of t, t² and t³

(iii) 1,2 and 3 are the coefficients of x, xy and y

(iv) 100 and 1000 are the coefficients of m and n

(v) -1 and 7 are the coefficients of p²q² and pq

(vi) 1.2 and 0.8 are the coefficients of a and b

(vii) 3.14 is the coefficient of r²

(viii) 2 and 2 are the coefficients of l and b

(ix) 0.1 and 0.01 are the coefficients of y and y²

☛ Check: NCERT Solutions Class 7 Maths Chapter 12

Video Solution:

Identify the numerical coefficients of terms (other than constants) in the following expressions: (i) 5 – 3t² (ii) 1 + t + t² + t³ (iii) x+2xy+3y (iv) 100m + 1000n (v) -p²q² + 7pq (vi) 1.2 a + 0.8 b (vii) 3.14r² (viii) 2(l + b) (ix) 0.1y + 0.01y²

Maths NCERT Solutions Class 7 Chapter 12 Exercise 12.1 Question 3

Summary:

The numerical coefficients of terms (other than constants) in the following: (i) 5 – 3t² (ii) 1 + t + t² + t³ (iv) 100m + 1000n (v) -p²q² + 7pq (vi) 1.2 a + 0.8 b (vii) 3.14r² (viii) 2(l + b) (ix) 0.1y + 0.01y² are(i) -3 (ii) 1,1 and 1 (iii) 1,2 and 3 (iv) 100 and 1000 (v) -1 and 7 (vi) 1.2 and 0.8 (vii) 3.14 (viii) 2 and 2 (ix) 0.1 and 0.01

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