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Q3 of 157 Page 13

Find out the product :

(i) 2a, 3a2, 5a4


(ii) 2x, 4y, 9z


(iii) ab, bc, ca


(iv) m, 4m, 3m2, - 6m3


(v) xyz, y2z, yx2


(vi) lm2, mn2, ln2


(vii) -2p, -3q, -5p2

i. 2a, 3a2, 5a4


= (2 3 5) (aa2a4)


= (30) (a1 + 2 + 4)


= 30 a7


ii. 2x, 4y, 9z


= (24(x


= 72xyz


iii. ab, bc, ca


= abbc


= axaxbxbxcxc


= a2 b2 c2


iv. m, 4m, 3m2, - 6m3


= mx4mx3 m2x- 6m


= (43 m2 m3)


= -72( m1 + 1 + 2 + 3)


= -72 m7


v. xyz, y2z, yx2


= (x x2)


= (x1 + 2) ( ) ( )


= (x3) (y4) ()


= x3y4


vi. lm2, mn2, ln2


= ( l


=


=


vii. -2p, -3q, -5p2


= (-2 p2)


= (-30) p1 + 2


= -30 p3q


More from this chapter

All 157 →
1

Find the product of the following pairs of monomials:

i. 3, 7x


ii. – 7x, 3y


iii. – 3a, 5ab


iv. 5a2, – 4a


v.


vi. Xy2, x2y


vii. x3y5, xy2


viii. abc, abc


ix. xyz. x2yz


x. a2b2c3, abc2

2

Complete the following table of products:

4

Find the product :

(i) (a3) × (2a5) × (4a15)


(ii) (5 – 2x) (4 + x)


(iii) (x + 3y) (3x – y)


(iv) (3x + 2) (4x – 3)


(v)

5

Find the product of the following :

(a + b) (2a2 – 5ab + 3b2)

Questions · 157
1. Algebra
1 1 1 1 1 1 1 2 3 4 5 6 1 2 3 4 5 5 5 5 5 6 6 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 5 5 6 6 7 8 9 10 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 5 5 5 5 1 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 3 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2
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