RBSE Solutions for Class 8 Maths Chapter 9 बीजीय व्यंजक Ex 9.1

RBSE Solutions for Class 8 Maths Chapter 9 बीजीय व्यंजक Ex 9.1 is part of RBSE Solutions for Class 8 Maths. Here we have given Rajasthan Board RBSE Class 8 Maths Chapter 9 बीजीय व्यंजक Exercise 9.1.

Board	RBSE
Textbook	SIERT, Rajasthan
Class	Class 8
Subject	Maths
Chapter	Chapter 9
Chapter Name	बीजीय व्यंजक
Exercise	Exercise 9.1
Number of Questions	4
Category	RBSE Solutions

Rajasthan Board RBSE Class 8 Maths Chapter 9 बीजीय व्यंजक Ex 9.1

प्रश्न 1
नीचे दिए गए बीजीय व्यंजकों का गुणा करके गुणनफल लिखिए
(i) 3 × 5x
(ii) – 5p, – 2q
(iii) 7l², – 3n²
(iv) 6m, 3n
(v) – 5x², – 2x²
हल:
(i) 3 x 5x
= 3 × 5× x
= 15 x

(ii) – 5p, – 2q
(- 5p) × (- 2q)
= (-5) × p × (-2) x q
= (-5) × (-2) × p× q
= 10pq

(iii) 7l², -3n
7l² × (- 3n²)
= 7 × l² × (-3) × n²
= 7 × (-3) × l² × n²
= – 21l²

(iv) 6m, 3n
6m × 3n
= 6 × n × 3 ×n
= 6 × 3 × n × n
= 18min

(v) – 5x², – 2x
(- 5x²) × (- 2x)
= (- 5) × x² × (-2) x x
= (-5) × (-2) × x² × x
= 10x³

प्रश्न 2
नीचे दी गई गुणन सारणी को गुणा करके पूरा कीजिए

हल:

प्रश्न 3
निम्न एकपदीय व्यंजकों(RBSESolutions.com) को गुणनफल ज्ञात कीजिए
(i) xy, x²y, xy, x
(ii) m, n, mn, m³n, mn³
(iii) kl, lm, km, klm
हल:
(i) xy, x²y, xy, x
xy x x²y × xy × x
= x × y × x × x × x × x × y × x
= x × x × x × x × x × y × у × у
= x⁵ × y³
= x⁵y³

(ii) m, n, mn, m³n, mn³
m × n × mn × m³n × mn³
= m × n × m × n × m × m × m × n × m × n × n × n
= m × m × m × m × m × m × n × n × n × n × n × n
= m⁶ × n⁶
= m⁶ n⁶

(iii) kl, lm, km, klm
kl × Im × km × klm = k × l × l × m × k × m × k × l × m
= k × k × k × l × l × l × m × m × m
=k³ × l³ x m³
= k³l³ × m³
= k³l³m³

प्रश्न 4
यदि मूलधन (P) = 4x² , समय (T) = 5x और दर (R) = 5y हो तो ब्याज \(\frac { PTR }{ 100 }\) में क्या होगा?
हल:

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