Question

of 4ab=15,a-b=8,find a+b​

Answer 1

Answer: $\sqrt{79}$

Step-by-step explanation: Using Identity : $(a+b)^{2} - (a-b)^2 = 4ab$

$(a+b)^{2} - (a-b)^2 = 4 ab\\(a+b)^2 - (8)^2 = 15\\(a+b)^2 = 15 + 64 (a+b)^2 = 79\\(a+b) = \sqrt{79}$