Question

[ ( 14 * square root of 5 ) - 80 ]
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Answer 1

Answer:

$3\sqrt{2\sqrt{5} }$

Step-by-step explanation:

$\sqrt{14\sqrt{5} }-80$

$\sqrt{14\sqrt{5} -4\sqrt{5}$

$\sqrt{18\sqrt{5}$

$3\sqrt{2\sqrt{5}$

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Answer 2

Step-by-step explanation:

Question 1.

Find the perfect square numbers between 40 and 50.

Solution:

Perfect square numbers between 40 and 50 = 49.

Question 2.

Which of the following 242, 492, 772, 1312 or 1892 end with digit 1?

Solution:

Only 492, 1312 and 1892 end with digit 1.

Question 3.

Find the value of each of the following without calculating squares.

(i) 272 – 262

(ii) 1182 – 1172

Solution:

(i) 272 – 262 = 27 + 26 = 53

(ii) 1182 – 1172 = 118 + 117 = 235