Question

please do fast please please with explain​

Answer 1

Step-by-step explanation:

a) 13

a) 13b) 18

You need to factorise the Sq. no. and make pairs of 2-2 Same no.

E.g. 324

324 = 2*2*3*3*3*3

So make pairs of 2 Same nos and take only one of it

So,

324 = 2*2*3*3*3*3

= 2*3*3

= 18

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Answer 2

Step-by-step explanation:

(a) 169

= 169 - 1 = 168

168 - 3 = 165

165 - 5 = 160

160 - 7 = 153

153 - 9 = 144

144 - 11 = 133

133 - 13 = 120

120 - 15 = 105

105 - 17 = 88

88 - 19 = 69

69 - 21 = 48

48 - 23 = 25

25 - 25 = 0

(b) 324

= 324 - 1 = 323, 323 - 3 = 320.

320 - 5 = 315, 315 - 7 = 308,

308 - 9 = 299, 299 - 11 = 288,

288 - 13 = 275, 275 - 15 = 260

260 - 17 = 243, 243 - 19 = 224

224 - 21 = 203, 203 - 23 = 180

180 - 25 = 155, 155 - 27 = 128

128 - 29 = 99, 99 - 31 = 68

68 - 33 = 35, 35 - 35 = 0

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