if a square + b square is equal to 41 and a b is equal to 4 find the value of a plus b
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if a square + b square is equal to 41 and a b is equal to 4 find the value of a plus b
,
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Step-by-step explanation:
a²+b²=41
ab = 4
then,
(a+b)²=a²+b²+2ab
(a+b)² = 41+2×4
(a+b)² = 41+8
(a+b)² = 49
a+b = √49
a+b = 7
Answer is 7