Question

the value of (1.2)^3 -(0.027) /1.44++(1.2)(0.3)+0.09 = give answer​ plssss

Answer 1

Given: The term (1.2)^3 -(0.027) /1.44+(1.2)(0.3)+0.09

To find: The value of the above term?

Solution:

• Now we have given the term (1.2)^3 -(0.027) /1.44+(1.2)(0.3)+0.09

• If we carefully see it, we can find that there are squares in it.

                   1.2^2 = 1.44 and 0.3^2 = 0.09 and 0.3^3 = 0.027

• So writing the squares term, we get:

                    (1.2)^3 - (0.3)^3 / 1.2^2 + (1.2)(0.3) + 0.3^2

• Now we know the formula:

                   a^3 - b^3 = (a - b)(a^2 + ab + b^2)

• So applying it, we get:

                   (1.2 - 0.3)(1.2^2 + (1.2)(0.3) + 0.3^2) / 1.2^2 + (1.2)(0.3) + 0.3^2

• Cancelling (1.2^2 + (1.2)(0.3) + 0.3^2) from numerator and denominator, we get:

                   (1.2 - 0.3) = 0.9

Answer:

           So the value of the given term is 0.9