Question

d) If a = 2, the value of 2a2 is (i) 4 (ii) 8 (iii) 2 (iv) 12​

Answer 1

Answer:

ii) 8

Step-by-step explanation:

a=2

2a2 = 2xax2  

       = 2x2x2

       = 4x2

Answer = 8

Answer 2

• We have to evaluate the above expression by using the given data.

               Given data:-  $a=2.$

               To find:- Value of above expression $2a2.$

               Solution:-

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

• BODMAS is an order of mathematic operations.

• BODMAS rule is to be followed while solving expressions in mathematics.

       It stands for,

           B= bracket

           O= order of power or rules

           D= division

           M= multiplication

           A= addition

           S= subtraction

      Now put the value of $a=2$ in the given equation we get,

              $2a2\\\Rightarrow 2\times(2)\times2\\\Rightarrow 4\times2\\\Rightarrow 8.$

          Hence we will get the value of $2a2=8.$