Question 1018213: Find the value of 8ab (a2+b2) when a+b=root 5 and a-b = root 3 Answer by ikleyn(52802) (Show Source): You can put this solution on YOUR website! .
Find the value of 8ab (a2+b2) when a+b=root 5 and a-b = root 3
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a + b = , (1)
a - b = . (2)
By adding equations (1) and (2), you get a = .
By subtracting (2) from (1), you get b = .
It implies that = . = . = = 2.5.
Next, a*b = . = . = .
Therefore, = = 10.
Answer. = 10.