Question

solve this for class 8 maths ncert algebraic expressions. All 10 questions answer to be solved no wrong answers​

Answer 1

Answer:

Q1. Identify the terms, their coefficients for each of the following expressions. (i) 5xyz2 – 3zy (ii) 1 + x + x2(iii) 4x2y2 – 4x2y2z2 + z2 (iv) 3 – pq + qr – p (v) (x/2) + (y/2) – xy (vi) 0.3a – 0.6ab + 0.5b

Solution :

Sl. No. Expression Term Coefficient

i) 5xyz2 – 3zy Term: 5xyz2

Term: -3zy

5 -3

ii) 1 + x + x2 Term: 1

Term: x

Term: x2 1 1 1

iii) 4x2y2 – 4x2y2z2 + z2 Term: 4x2y2

Term: -4 x2y2z2

Term :  z2 4 -4 1

iv) 3 – pq + qr – p Term : 3 -pq qr -p 3 -1 1 -1

v) (x/2) + (y/2) – xy Term : x/2 Y/2 -xy ½ 1/2 -1

vi) 0.3a – 0.6ab + 0.5b Term : 0.3a -0.6ab 0.5b 0.3 -0.6 0.5

Answer 2

Answer:

1. x = 2

2. 8/9

3. 7/9

4. 5

5. -1

6. 9