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41. .InQteugaedrrsatic Equations e Leeleaar rnn. P.puunnj ajabb

2 + 2 + 2 + 2 + 2 + 2 + 2 + 2 = 8 x 2 = 16
The rules for multiplication of integers are given below:
Rule 1: Integers with like signs
The product of two integers having same signs is always positive.
For example:

Rule 2: Integers with unlike signs
The product of two integers having opposite signs is always
negative. For example:

Example: Find the product of the following pairs.
(i) +13 , +9 (ii) -11 , +11 (iii) -8 , -7 (iv) + 25 , -6

Solution:

EXERCISE 4.4

1. Fill in the boxes. (ii) (-9) xx = 81
(i) (+ 6) x (- 3) = x
(iii) (- 2) x (+ 8) = x (iv) xx (+11) = 121
(v) x x (- 7) = (56) (vi) - 25 xx = - 75
(vii) (-) x (-) = x (viii) (+) x (-) = x

15 version: 1.1