(a) Identify terms which contain x and give the coefficient of x
(i) y2x + y (ii) 13y2 – 8yx (iii) x + y + 2 (iv) 5 + z + zx
v) 1 + x + xy (vi) 12xy2 + 25 (vii) 7x + xy2
(b) Identify terms which contain y2 and give the coefficients of y2
(i) 8 – xy2 (ii) 5y2 + 7x (iii) 2x2y – 15xy2 + 7y2
Solution:
(a) Identify terms which contain x and give the coefficient of x:
(i) Term containing x = y2x and Coefficient of x = y2
(ii) Term containing x = - 8yx and Coefficient of x = - 8y
(iii) Term containing x = x and Coefficient of x = 1
(iv) Term containing x = zx and Coefficient of x = z
(v) Term containing x = x; xy and Coefficient of x in both the terms = 1, y
(vi) Term containing x = 12xy2 and Coefficient of x = 12y2
(vii) Term containing x = 7x; xy2 and Coefficient of x in both the terms = 7, y2
(b) Identify terms which contain y2 and give the coefficient of y2.
(i) Term containing y2 = - xy2 and Coefficient of y2 = -x
(ii) Term containing y2 = 5y2 and Coefficient of y2 = 5
(iii) Term containing y2 = - 15xy2; 7y2 and Coefficient of y2 in both the terms = -15x , 7
☛ Check: NCERT Solutions for Class 7 Maths Chapter 12
Video Solution:
(a) Identify terms which contain x and give the coefficient of x. (i) y²x + y (ii) 13y² – 8yx (iii) x + y + 2 (iv) 5 + z + zx (v) 1 + x + xy (vi) 12 xy² + 25 (vii) 7x + xy² (b) Identify terms which contain y² and give the coefficients of y². (i) 8 – xy² (ii) 5y² + 7x (iii) 2x²y – 15xy² + 7y²
Maths NCERT Solutions Class 7 Chapter 12 Exercise 12.1 Question 4
Summary:
(a) Identifying terms which contain x and give the coefficient of x: (i) Term containing x = y2x and Coefficient of x = y2 (ii) Term containing x = - 8yx and Coefficient of x = - 8y (iii) Term containing x = x and Coefficient of x = 1 (iv) Term containing x = zx and ;Coefficient of x = z (v) Term containing x = x, xy ;and Coefficient of x = 1, y (vi) Term containing x = 12xy2 and Coefficient of x = 12y2 (vii) Term containing x = 7x, xy2 and Coefficient of x = 7, y2
(b) Identify terms which contain y2 and give the coefficient of y2. (i) Term containing y2 = - xy2 and Coefficient of y2 = -x (ii) Term containing y2 = 5y2 and Coefficient of y2= 5 (iii) Term containing y2 = - 15xy2, 7y2 and Coefficient of y2 = -15x, 7
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