Simplify the following using the formula: (a−b)(a+b)=a2−b2: (i) (8

1.	Simplify the following using the formula: (a−b)(a+b)=a2−b2: (i) (82)2−(18)2 (ii) (467)2−(33)2 (iii) (79)2−(69)2 (iv) 197×203 (v) 113×87 (vi) 95×105 (vii) 1.8×2.2 (viii) 9.8×10.2
Answer» Simplify the following using the formula: $(a - b) (a + b) = a^{2} - b^{2} :$ $(i) (82)^{2} - (18)^{2}$ $(i i) (467)^{2} - (33)^{2}$ $(i i i) (79)^{2} - (69)^{2}$ $(i v) 197 \times 203$ $(v) 113 \times 87$ $(v i) 95 \times 105$ $(v i i) 1.8 \times 2.2$ $(v i i i) 9.8 \times 10.2$

Simplify the following using the formula: (a−b)(a+b)=a2−b2: (i) (82)2−(18)2 (ii) (467)2−(33)2 (iii) (79)2−(69)2 (iv) 197×203 (v) 113×87 (vi) 95×105 (vii) 1.8×2.2 (viii) 9.8×10.2

Answer»

Simplify the following using the formula: $(a - b) (a + b) = a^{2} - b^{2} :$

$(i) (82)^{2} - (18)^{2}$ $(i i) (467)^{2} - (33)^{2}$ $(i i i) (79)^{2} - (69)^{2}$ $(i v) 197 \times 203$

$(v) 113 \times 87$ $(v i) 95 \times 105$ $(v i i) 1.8 \times 2.2$ $(v i i i) 9.8 \times 10.2$