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Q2 of 157 Page 13

Complete the following table of products:


For finding B1A2


2X x -3y


= -6xy


B1A4


2X x -5xy


= -10 y


= -10 y


B2A1


-3Y x 2x


= -6xy


B2A6


-3Y x -6x2y2


= 18 x (y(1 + 2)) x x2


= 18 y3 x2


B3A3


4x2 x 4x2


= 16x(2 + 2)


= 16x4


B3A5


4x2 x 7x2y


= (4x7) x ( x2 + 2) x y


= 28 x4y


B4A1


-5xy X 2x


= (-5x2) x ( ) x y


= -10 y


= -10 y


So the final table will be



More from this chapter

All 157 →
6

Find out the degree of the polynomials and the leading coefficients of the polynomials given below:

(i)


(ii) 13x3 – x13 – 113


(iii) -77 + 7x2 – x7


(iv) -181 + 0.8y – 8y2 + 115y3 + y8


(v) x7 – 2x3y5 + 3xy4 – 10xy + 10

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

3

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

4

Find the product :

(i) (a3) × (2a5) × (4a15)


(ii) (5 – 2x) (4 + x)


(iii) (x + 3y) (3x – y)


(iv) (3x + 2) (4x – 3)


(v)

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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