Question

12. If a=3, the value of 4a2 -2a is _________ a. 30 b. -30 c. 36 d. 1/30​

Answer 1

Answer:

a.30

Step-by-step explanation:

4*3²-2*3

4*9-6

36-6

therefore,4a²-2a=30

Answer 2

Answer:

We will get the value 30.

Step-by-step explanation:

        Given data:- $a=3.$

        To find:- Value of $4a^{2} -2a.$

        Solution:-

• To solve the above question we will follow the BODMAS rule.

• BODMAS is a order of mathematic operations.

• It stands for,

           B= bracket

           O= order of power or rules

           D= division

           M= multiplication

           A= addition

           S= subtraction

       Now put the value of a=3  in the given data we get,

           $4a^{2} -2a\\=4(3)^{2}-2(3)\\=4\times9-6\\=36-6\\=30$

       So that we will get the correct solution is option(a)30.