if a+b = 11 and a2 + b2 =61 find ab
Answers
Answered by
36
(a+b)^2 = a^2+b^2+2ab
11^2 = 61+ 2ab
121-61 = 2ab
ab = 30
Answered by
34
(a+b)² =a² + b² + 2ab
put the value according to questions
now we get
(11)² = 61 + 2ab
2ab = 121 - 61
2ab = 60
ab = 30
.................... .
Hope it may help you.
put the value according to questions
now we get
(11)² = 61 + 2ab
2ab = 121 - 61
2ab = 60
ab = 30
.................... .
Hope it may help you.
Similar questions