if a+b=5 and ab =6 find the value of a-b
Answers
Answered by
0
Answer:
Step-by-step explanation:
(A-b)^2=(a-b)^2+a-b,a-b=√5^2+6^2,√61a-b=√61
Answered by
0
Answer:
Either:
a = 2 and b = 3
Or
a = 3 and b = 2
Step-by-step explanation:
a + b = 5 ...eqn1
ab = 6
therefore, b = 6/a, putting in eqn1
a + 6/a = 5
Multiplying by a...
a^2 + 6 = 5a
a^2 - 5a + 6 = 0
a^2 - 2a - 3a + 6 = 0
a(a - 2) - 3(a - 2) = 0
(a - 2)(a - 3) = 0
a = 2 or 3
b = 3 or 2
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