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Using a^2-b^2=(a+b) (a-b), find (i) 5...

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`

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

Using a^2 – b^2 = (a + b) (a – b) , find: 51^2 – 49^2

Using a^2-b^2 = (a+b)(a-b) find (1.02)^2-(0.98)^2

Using a^2-b^2 = (a+b)(a-b) find 153^2-147^2

Using a^2-b^2 = (a+b)(a-b) find 12.1^2-7.9^2

Using a^2 – b^2 = (a + b) (a – b) , find: 153^2 – 147^2

Using a^2 – b^2 = (a + b) (a – b) , find: (1.02)^2 – (0.98)^2

Using a^2 – b^2 = (a + b) (a – b) , find: 12.1^2 – 7.9^2