Question

evaluate.......................................................... a)82^2-18^2 b) 196X204 c) (205)^2

Answer 1

Answer:

a) 6400

b) 39984

c) 42025

Step-by-step explanation:

a) By using formula of a²-b² = (a+b)(a-b)

= (82+18)(82-18)

= 6400

b) By multiplying 196 X 204

= 39984

c) By squaring 205

= 205 X 205

= 42025

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