Evaluatei 3-2 ii -4-2 iii 1-2-5

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Byju's Answer

Standard VIII

Mathematics

Algebraic Expressions

Evaluatei 3-2...

Question

Evaluate

(i) 3⁻² (ii) (−4)⁻² (iii)

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Solution

(i)

(ii)

(iii)

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Similar questions

Q. Evaluate:
(i)

3^{- 2}

(ii)

(- 4)^{- 2}

(iii)

{(\frac{1}{2})}^{- 5}

Q. Evaluate
i)

(38)^{2} - (37)^{2}

ii)

(75)^{2} - (74)^{2}

iii)

(141)^{2} - (140)^{2}

Match the following:

$\begin{matrix} C o m p o u n d s & C o o r d i n a t i o n (A : B) (1) Z n S & (i) 8 : 8 (2) C s C l & (i i) 6 : 6 (3) N a C l & (i i i) 4 : 4 (4) N a_{2} O & (i v) 8 : 4 (5) C a F_{2} & (v) 4 : 8 \end{matrix}$

Q. Evaluate (i) (3

^{0} + 2^{- 1}

)

\times

4^{2}

(ii) (2

^{- 1} \times 4^{- 2}) \div 2^{- 3}

(iii)

(\frac{5}{8})^{7} \times (\frac{8}{5})^{- 5}

Match the following

1. $P C l_{3}$ (i). 2 lone pairs (I) 5 Ligands

2. $C l F_{3}$ (ii). 3 lone pair (II) 3 Ligands

3. $X e F_{6}$ (iii). 0 lone pair (III) 6 Ligands

4. $S b C l_{5}$ (iv). 1 lone pairs (IV) 4 Ligands

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Evaluate (i) 3−2 (ii) (−4)−2 (iii)

(i) (ii) (iii)

Evaluate

(i) 3⁻² (ii) (−4)⁻² (iii)

(i)

(ii)

(iii)