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Ch 9 Algebraic Expressions and Identities || Exercise 9.3 || Class 8 Maths || RBSE CBSE NCERT
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EXERCISE 9.3
1. Carry out the multiplication of the expressions in each of the following pairs.
(i) 4p, q + r (ii) ab, a – b (iii) a + b, 7a2b2
(iv) a2– 9, 4a
(v) pq + qr + rp, 0
2. Complete the table.
First expression Second expression Product
(i) a b + c + d
(ii) x + y – 5 5xy . . .
(iii) p 6p2 – 7p + 5 . . .
(iv) 4p2q2 p2 – q2 . . .
(v) a + b + c abc . . .
3. Find the product.
(i) (a2) × (2a22) × (4a26) (ii)
4. (a) Simplify 3x (4x – 5) + 3 and find its values for (i) x = 3 (ii) x =-1
5. (a) Add: p ( p – q), q ( q – r) and r ( r – p)
(b) Add: 2x (z – x – y) and 2y (z – y – x)
(c) Subtract: 3l (l – 4 m + 5 n) from 4l ( 10 n – 3 m + 2 l )
(d) Subtract: 3a (a + b + c ) – 2 b (a – b + c) from 4c ( – a + b + c )
निष्कासन 9.3
1. निम्नलिखित जोड़े में से प्रत्येक में अभिव्यक्तियों के गुणन को ले जाएं।
(i) 4p, q + r (ii) ab, a - b (iii) a + b, 7a2b2
(iv) a2– 9, 4 ए
(v) pq + qr + rp, ०
2. तालिका को पूरा करें।
पहली अभिव्यक्ति दूसरी अभिव्यक्ति उत्पाद
(i) a b + c + d
(ii) x + y - ५ ५ छ। । ।
(iii) पी ६ पी २ - + पी + ५। । ।
(iv) 4p2q2 P2 - q2 । ।
(v) a + b + c abc। । ।
3. उत्पाद का पता लगाएं।
(i) (a2) × (2a22) × (4a26) (ii)
4. (क) 3x (4x - 5) + 3 को सरल कीजिए और (i) x = 3 (ii) x = -1 के लिए उसके मान ज्ञात कीजिए
5. (ए) जोड़ें: पी (पी - क्यू), क्यू (क्यू - आर) और आर (आर - पी)
(बी) जोड़ें: 2x (z - x - y) और २y (z - y - x)
(c) घटाना: 3l (l - 4 m + 5 n) 4l (10 n - 3 m + 2 l) से
(d) घटाव: 4a से 3a (a + b + c) - 2 b (a - b + c) - (a + b + c)
1. Carry out the multiplication of the expressions in each of the following pairs.
(i) 4p, q + r (ii) ab, a – b (iii) a + b, 7a2b2
(iv) a2– 9, 4a
(v) pq + qr + rp, 0
2. Complete the table.
First expression Second expression Product
(i) a b + c + d
(ii) x + y – 5 5xy . . .
(iii) p 6p2 – 7p + 5 . . .
(iv) 4p2q2 p2 – q2 . . .
(v) a + b + c abc . . .
3. Find the product.
(i) (a2) × (2a22) × (4a26) (ii)
4. (a) Simplify 3x (4x – 5) + 3 and find its values for (i) x = 3 (ii) x =-1
5. (a) Add: p ( p – q), q ( q – r) and r ( r – p)
(b) Add: 2x (z – x – y) and 2y (z – y – x)
(c) Subtract: 3l (l – 4 m + 5 n) from 4l ( 10 n – 3 m + 2 l )
(d) Subtract: 3a (a + b + c ) – 2 b (a – b + c) from 4c ( – a + b + c )
निष्कासन 9.3
1. निम्नलिखित जोड़े में से प्रत्येक में अभिव्यक्तियों के गुणन को ले जाएं।
(i) 4p, q + r (ii) ab, a - b (iii) a + b, 7a2b2
(iv) a2– 9, 4 ए
(v) pq + qr + rp, ०
2. तालिका को पूरा करें।
पहली अभिव्यक्ति दूसरी अभिव्यक्ति उत्पाद
(i) a b + c + d
(ii) x + y - ५ ५ छ। । ।
(iii) पी ६ पी २ - + पी + ५। । ।
(iv) 4p2q2 P2 - q2 । ।
(v) a + b + c abc। । ।
3. उत्पाद का पता लगाएं।
(i) (a2) × (2a22) × (4a26) (ii)
4. (क) 3x (4x - 5) + 3 को सरल कीजिए और (i) x = 3 (ii) x = -1 के लिए उसके मान ज्ञात कीजिए
5. (ए) जोड़ें: पी (पी - क्यू), क्यू (क्यू - आर) और आर (आर - पी)
(बी) जोड़ें: 2x (z - x - y) और २y (z - y - x)
(c) घटाना: 3l (l - 4 m + 5 n) 4l (10 n - 3 m + 2 l) से
(d) घटाव: 4a से 3a (a + b + c) - 2 b (a - b + c) - (a + b + c)
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