Find the value of each of the following-i -72ii -34iii -55

We know that if #39;a #39; is natural number, then ( minus;a)even number = Positive number ( minus;a)odd number nbsp; = Negative number We have (i) ...

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Standard VII

Mathematics

Multiplication of Integers

Find the valu...

Question

Find the value of each of the following:
(i) (−7)²
(ii) (−3)⁴
(iii) (−5)⁵

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Solution

We know that if 'a' is natural number, then
(−a)^{even number} = Positive number
(−a)^{odd number}= Negative number

We have
(i) (−7)² = −7 × −7 = 49
(ii) (−3)⁴ = −3 × −3 × −3 × −3 = 81
(iii) (−5)⁵ = −5 × −5 × −5 × −5 × −5 = −3125

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Find the value of each of the following: (i) (−7)2 (ii) (−3)4 (iii) (−5)5

We know that if 'a' is natural number, then (−a)even number = Positive number (−a)odd number = Negative number We have (i) (−7)2 = −7 × −7 = 49 (ii) (−3)4 = −3 × −3 × −3 × −3 = 81 (iii) (−5)5 = −5 × −5 × −5 × −5 × −5 = −3125

Find the value of each of the following:
(i) (−7)²
(ii) (−3)⁴
(iii) (−5)⁵

We know that if 'a' is natural number, then
(−a)^{even number} = Positive number
(−a)^{odd number}= Negative number

We have
(i) (−7)² = −7 × −7 = 49
(ii) (−3)⁴ = −3 × −3 × −3 × −3 = 81
(iii) (−5)⁵ = −5 × −5 × −5 × −5 × −5 = −3125