Question

Evaluatethe following:
(9.9)²​

Answer 1

Answer:

What is evaluation?

"Evaluation" mostly means "simplifying an expression down to a single numerical value".

You write (9.9) as (10 - 0.1)

Now apply this rule :-

${(a - b)}^{2} = {a}^{2} - 2ab + {b}^{2}$

${(10 - 0.1)}^{2} = {10}^{2} - 2 \times 10 \times 0.1 \times {(0.1)}^{2}$

$= 100 - 2 + 0.01$

$= 98 + 0.01$

$= 98.01$

Step-by-step explanation:

Hope this helps you.

# By Sparkly Princess