Say whether the following are true or false- True False 1-33-27 2-24-16 3-52-25 4-73-147 5 -1-23-1-8

The complete table is: nbsp; True False (1) (−3)3 = +27 nbsp; False ...

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Standard VII

Mathematics

Exponents with Like Bases

Say whether t...

Question

Say whether the following are true or false:

True

False

(1) (−3)³ = +27

(2) (+2)⁴ = −16

(3) (−5)² = +25

(4) (+7)³ = −147

(5)

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Solution

The complete table is:

True

False

(1) (−3)³ = +27

False

(2) (+2)⁴ = −16

False

(3) (−5)² = +25

True

(4) (+7)³ = −147

False

(5)

True

Explanation:

(−3)³= (−3) × (−3) × (−3) = −27

(+2)⁴ = 2 × 2 × 2 × 2 = +16

(−5)² = 5 × 5 = +25

(+7)³ = 7 × 7 × 7= +343

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	True	False
(1) (−3)³ = +27
(2) (+2)⁴ = −16
(3) (−5)² = +25
(4) (+7)³ = −147
(5)

	True	False
(1) (−3)³ = +27		False
(2) (+2)⁴ = −16		False
(3) (−5)² = +25	True
(4) (+7)³ = −147		False
(5)	True

21	20	55	39	48	46	36	54	42	30
29	42	32	40	34	31	35	37	52	44
39	45	37	33	51	53	52	46	43	47
41	26	52	48	25	34	37	33	36	27
54	36	41	33	23	39	28	44	45	38

21	20	55	39	48	46	36	54	42	30
29	42	32	40	34	31	35	37	52	44
39	45	37	33	51	53	52	46	43	47
41	26	52	48	25	34	37	33	36	27
54	36	41	33	23	39	28	44	45	38

Say whether the following are true or false: True False (1) (−3)3 = +27 (2) (+2)4 = −16 (3) (−5)2 = +25 (4) (+7)3 = −147 (5)

The complete table is: True False (1) (−3)3 = +27 False (2) (+2)4 = −16 False (3) (−5)2 = +25 True (4) (+7)3 = −147 False (5) True Explanation: (−3)3= (−3) × (−3) × (−3) = −27 (+2)4 = 2 × 2 × 2 × 2 = +16 (−5)2 = 5 × 5 = +25 (+7)3 = 7 × 7 × 7= +343

Say whether the following are true or false:

True

False

(1) (−3)³ = +27

(2) (+2)⁴ = −16

(3) (−5)² = +25

(4) (+7)³ = −147

(5)

21	20	55	39	48	46	36	54	42	30
29	42	32	40	34	31	35	37	52	44
39	45	37	33	51	53	52	46	43	47
41	26	52	48	25	34	37	33	36	27
54	36	41	33	23	39	28	44	45	38