Question

if a-b=10 and ab=11 find a+b

Answer 1

Hey !

a - b = 10

ab = 11

(a + b)² = (a - b)² + 4ab
             = 10² + 4 × 11
             = 100 + 44
             = 144

a + b = √ 144

a + b = 12

Answer 2

QUESTION ---- if a-b=10 and ab=11 find a+b

ANSWER
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(a - b) square = a^2 + b^2 - 2ab

(10) square = a^2 + b^2 - 2 × 11

=> 100 = a^2 + b^2 - 22

=> a^2 + b^2 = 100 + 22

=> a^2 + b^2 = 122

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(a + b) square = a^2 + b^2 + 2ab

(a + b) square = 122 + 2 × 11

(a + b) square = 122 + 22

(a+b) square = 144

(a + b) = √144

(a + b) = 12

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ANSWER = (a + b) = 12

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HOPE IT HELPS :):):):):):):):)