Answer:
6x^2 + 8x
Step-by-step explanation:
the 2 is on top of x, so its squared
Answer:
√21
Step-by-step explanation:
<u><em>Irrational number:-</em></u>
An irrational number is a type of real number which cannot be represented as a simple fraction . it cannot be expressed in the form of a ratio.
Example:-
√2,√3, ,......
Given option
√21 is a irrational number
To find the sum, add. To find the difference, subtract. It's simple terminology in mathematics. Hope I helped!