Simplify each of the following:
(i) 175 × 175 + 2 × 175 × 25 + 25 ×25
(ii) 322 × 322 – 2 × 322 × 22 + 22 × 22
(iii) 0.76 ×0.76+2×0.76×0.24+0.24×0.24
(iv) 
(i) We know, (a+b)2 = a2 + b2 +2ab
(ii) We know, (a-b)2 = a2 + b2 -2ab
(iii) We know, (a+b)2 = a2 + b2 +2ab
(iv) We know, (a-b)2 = (a-b) (a+b)
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