Question

Evaluate 982 using the identity (a-b)2 = a2 -2ab+b2​

Answer 1

Answer:

(a-b)²=a²-2ab+b²

982²=(1000-18)²=(1000)²-2(1000)(18)+(18)²

=1000000-36000+324=964,324

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Answer 2

Answer:

970225

Step-by-step explanation:

985=990-5

985^2=(990-5)^2

(990-5)^2

990^2+5^2-2*990*5

980100+25-9900

970225

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