if a-b=
= 0.9 and ab=0.36, find
a+b
a²-b²
Answers
Answered by
1
Answer:
answer is a+b=45 a square -b square =
Step-by-step explanation:
1.35 please follow me
Answered by
3
Answer:
a−b=0.9
Squaring both sides,
=>(a−b)
2
=(0.9)
2
=>a
2
+b
2
−2ab=0.81
=>a
2
+b
2
=0.81+2(0.36)
=>a
2
+b
2
=1.53
Again,
(a+b)
2
=a
2
+b
2
+2ab
=1.53+2(.036)
=1.53+0.72
=2.25
=>a+b=
2.25
=±1.5
Now,
(a
2
−b
2
)=(a+b)(a−b)
=±(1.5)(0.9)
=±1.35
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