a^-64 in the form (a+b)(a-b)
Answers
Answered by
4
Answer:
a(a+b)=36 ...(i)
b(a+b)=64 ...(ii)
On dividing (i) by (ii), we get
b
a
=
16
9
⇒b=
9
16
a ...(iii)
∴(i)becomes
a
2
+ab−36=0⇒a
2
+a(
9
16
a)−36=0
⇒
9
25a
2
=36
⇒a
2
=
25
324
⇒a=
5
18
(∵ a is positive.)
From (iii)
b=
9
16
×
5
18
⇒b=
5
32
a−b=
5
18
−
5
32
=−
5
14
=−2.8
Answered by
0
Answer:
your answer is = -2.8.....
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