Question

EVALUATE :- (iv) [4^2 - 3^2] ÷ ( 1 / 7 )^2​

Answer 1

Answer:

343

Step-by-step explanation:

=[4²-3²]×7²

=[16-9]×7²

=[7]×7²

=7×7×7

=343

Answer 2

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EVALUATE :- (iv) $[4² - 3²] ÷ {(\frac{1}{7} )}^{2}$

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${4}^{2} - {3}^{2} \div {(\frac{1}{7}) }^{2}$

$= 16 - 9 \div \frac{1}{49}$

$= 7 \div \frac{1}{49}$

$= 7 \times \frac{49}{1}$

$= 7 \times 49$

${\boxed {\boxed {= 343}}}$

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