1.

Find the equivalent expression

Answer»

Answer:

6( 2a + b ).

Step-by-step explanation:

Whenever we open a BRACKET( curly, brace, big ), we multiply all the terms in that the brackets by the number outside the brackets.

  Suppose we are given with 3( 2a + 4 ), then we will firstly multiply 3 and 2a and then 3 and 4, so the answer will be 3 x 2a   +     3 x 4    = 6a + 12

        Here,

     We have 12A + 6b. 12 can be written as 2 x 2 x 3 and 6 can be written as 2 x 3.

  Here, 2 x 3 are common in both the numbers, so we can write 2 x 3 outside the bracket and the remaining factors inside it.

   2 x 3( 2a + b )  

 ⇒ 6( 2a + b )

            2nd one is the CORRECT.


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