Question

Evaluate: (85) 2 -(75) 2

Answer 1

A square - b square = (a+b) (a-b)
(85+75)(85-75)=160x10=1600

Answer 2

Answer:

#Answer:1600

Step-by-step explanation:

By Using the Identity:a²-b²=(a+b)(a-b)

Then=85²-75

=(85+75)(85-75)

=160×10

=1600

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