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Question

Find the squares of the following numbers
(i) 38 (ii) 710 (iii) 15 (iv) 23 (v) 3140

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Solution

(i) 3/8
(3/8)2=3/8×3/8=(3×3)/(8×8)=9/64

(ii) 7/10
(7/10)2=7/10×7/10=(7×7)/(10×10)=49/100

(iii) 1/5
(1/5)2=1/5×1/5=(1×1)/(5×5)=1/25

(iv) 2/3
(2/3)2=2/3×2/3=(2×2)/(3×3)=4/9

(v) 31/40
(31/40)2=31/40×31/40=(31×31)/(40×40)=961/1600

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