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[" 7.Using "a^(2)-b^(2)=(a+b)(a-b)" ,fin...

[" 7.Using "a^(2)-b^(2)=(a+b)(a-b)" ,find "],[[" (i) "51^(2)-49^(2)," (ii) "(1.02)^(2)-(0.98)^(2)" (iii) ",153^(2)-147^(2)]]

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Using a^(2)-b^(2)=(a+b)(a-b), find (i)51^(2)-49^(2) (ii) (1.02)^(2)-(0.98)^(2) (iii) 153^(2)-147^(2) (iv) 12.1^(2)-7.9^(2)

Using a^2-b^2=(a+b) (a-b), find (i) 51^2-49^2 (ii) (1.02)^2 - (0.98)^2 (iii) 153^2 - 147^2 (iv) 12.1^2 - 7.9^2

Using a^2-b^2 = (a+b)(a-b) ,find: 103 xx 97 .

Using a^2-b^2 = (a+b)(a-b) ,find: 194 xx 206 .

Using a^2-b^2 = (a+b)(a-b) ,find: 983^2-17^2 .

Using a^2-b^2 = (a+b)(a-b) 'find' 51^2-49^2