Question

if a2+b2=20,ab=40.find value of (a+b)​

Answer 1

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Answer 2

❇️ GIVEN :-

${a}^{2} + {b}^{2} = 20$

$and \: ab = 40$

⭐️ SOLUTION :-

TO FIND BY USING FORMULAE ...

$(a + b) ^{2} = {a}^{2} + {b}^{2} + 2ab$

$(a + b) ^{2} = 20 + 2 \times 40$

$( a + b) ^{2} = 20 + 80 = 100$

$(a + b) = \sqrt{100}$

$(a + b) = 10$

Answer...

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