this one just answer me plssssss
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a^2-b^2=(a+b)(a-b)
=(3+√5/3-√5 +3-√5/3+√5)(3+√5/3-√5 -(3-√5/3+√5)}
;=(9+5+6√5+5+9-6√5/9-5)(9+5+6√5-(5+9-6√5/9-5)
:=(28/4)(9+5+6√5-5-9+6√5/4)
:=(28/ 4)×12√5/4
;=7×3√5
;=21√5
is your answer
=(3+√5/3-√5 +3-√5/3+√5)(3+√5/3-√5 -(3-√5/3+√5)}
;=(9+5+6√5+5+9-6√5/9-5)(9+5+6√5-(5+9-6√5/9-5)
:=(28/4)(9+5+6√5-5-9+6√5/4)
:=(28/ 4)×12√5/4
;=7×3√5
;=21√5
is your answer
sabrina789:
great thanks
Answered by
1
The answer is 21root5.
Hope this helps!
Hope this helps!
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