Using the slope-intercept form, y=mx + b to find the slope I found that correct answer is 2/5.
I have no clue what that is
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so ,
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<u>Step-by-step explanation:</u>
Here we have , ab= 8 & a^2+b^2=16 i.e.
and
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We need to find value of (a+b)^2 i.e.
:
It's and identity and we know that 
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∴
&
so ,
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THE ANSWER IS 1.25 X 10^3