Question


Answer

Given a+b=8

Square both sides of the equation

a^2+2ab+b^2=64

Plug in ab=2

a^2+b^2=64-2\cdotp 2 =60

(a-b)^2=a^2-2ab+b^2

=60-2\cdotp 2

=56

Steven Zheng posted 1 month ago

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