Simplify the following using the formula: `(a-b)(a+b)=a^2-b^2:` `1. 8 xx 2.2` (ii) `9. 8 xx 10.2`

Simplify the following using the formula: (a-b)(a+b)=a^(2)-b^(2):1.8x2.2 (ii) 9.8x10.2

Simplify the following using the formula: (a-b)(a+b)=a^2-b^2: 113 xx\ 87 (ii) 95 xx 105

Simplify the following using the formula: (a-b)(a+b)=a^(2)-b^(2):113x87 (ii) 95x105

Simplify the following using the formula: (a-b)(a+b)=a^2-b^2: (i) (79)^2-(69)^2 (ii) 197\ xx\ 203

Simplify the following using the formula: (a-b)(a+b)=a^(2)-b^(2):(79)^(2)-(69)^(2)( ii) 197x203

Simplify the following using the formula: (a-b)(a+b)=a^2-b^2: (i) (82)^2-(18)^2 (ii) (467)^2-(33)^2

Simplify the following using the formula: (a-b)(a+b)=a^(2)-b^(2):(82)^(2)-(18)^(2) (ii) (467)^(2)-(33)^(2)

Simplify the following using the law a^m xx b^m = (ab)^m : a^8 xx b^8 .

Use the formula : (a+b) (a-b) = a^(2) - b^(2) to evaluate : (iv) 9.8 xx 10.2

Simplify the following by using (a+b)(a-b)=a^2-b^2dot (i) 68 xx 72 (ii) 101 xx 99 (iii) 67 xx 73 (iv) 128^2-77^2