Ex.12.1 Q4 Algebraic Expressions Solution - NCERT Maths Class 7

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Question

(a) Identify terms which contain \(x\) and give the coefficient of \(x.\)

(i) \(y^2x + y\)

(ii) \(13y^2 – 8yx\)

(iii) \(x + y + 2\)

(iv) \(5 + z + zx\)

(v) \(1 + x + xy\)

(vi) \(12xy^2 + 25\)

(vii) \(7x + xy^2\)

(b) Identify terms which contain \(y^2\) and give the coefficient of \(y^2.\)

(i) \(8 – xy^2\)

(ii) \(5y^2 + 7x\)

(iii) \(2x^2y – 15xy^2\) + \(7y^2\)

 Video Solution
Algebraic Expressions
Ex 12.1 | Question 4

Text Solution

(a) Identify terms which contain \(x\) and give the coefficient of \(x.\)

(i) \(y^2x + y\)

(ii) \(13y^2 – 8yx\)

(iii) \(x + y + 2\)

(iv) \(5 + z + zx\)

(v) \(1 + x + xy\)

(vi) \(12xy^2 + 25\)

(vii) \(7x + xy^2\)

S.No.

Expression

Term containing x

Coefficient of x

(i)

\(y^2x + y\)

\(y^2x\)

\(y^2\)

(ii)

\(13y^2 – 8yx\)

\(–8yx\)

\(–8y\)

(iii)

\(x + y + 2\)

\(x\)

\(1\)

(iv)

\(5 + z + zx\)

\(zx\)

\(z\)

(v)

\(1 + x + xy\)

\(x\) and \(xy\)

\(1\) and \(y\)

(vi)

\(12xy^2 + 25\)

\(12xy^2\)

\(12y^2\)

(vii)

\(7 x + xy^2\)

\(7 x\) and \(xy^2\)

\(7\) and \(y^2\)

 

(b) Identify terms which contain \(y^2\) and give the coefficient of \(y^2.\)

(i) \(8 – xy^2\)

(ii) \(5y^2 + 7x\)

(iii) \(2x^2y – 15xy^2\) + \(7y^2\)

S.No.

Expression

Term containing y2

Coefficient of y2

(i)

\(8 – xy^2\)

\(– xy^2\)

\(– x\)

(ii)

\(5y^2 + 7x\)

\(5y^2\)

\(5\)

(iii)

\(2x^2 y – 15xy^2 + 7y^2\)

\(– 15xy^2\) and \(7y^2\)

\(– 15x\) and \(7\)

  
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