192k views
9 votes
Math help please.I don't understand how to solve this problem.

Math help please.I don't understand how to solve this problem.-example-1

1 Answer

4 votes

Answer:


(144)/(2025)

Explanation:

( 3 a b ) ² = 9 a² b²

Given that,

a = -
(1)/(5)

b = -
(4)/(9)

Now you have to replace a and b with -
(1)/(5) and -
(4)/(9) respectively.

Let us solve now.

9 a² b² = 9 × ( -
(1)/(5) ) ² × ( -
(4)/(9) ) ²

= 9 ×
(1)/(25) ×
(16)/(81)

=
(9*1*16)/(25*81)

=
(144)/(2025)

Let me know if you've any other questions. :-)

User Jpact
by
8.6k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories