If a + b = 4 and a2 + b2 = 2, Which of the following is the value of ab? Answer: None of the Mentione
9
8
7
Answers
Answered by
4
Answer:
ab is 7 using algebraic identity
Answered by
0
Answer:
7
Step-by-step explanation:
(a + b)^2=a^2+b^2+2ab=
(4)^2=2+2ab=
16-2=2ab
14=2ab
ab=14/2
ab=7
therefore the value of ab = 7
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