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Using the identity [tex](a - b)^2 = a^2 - 2ab + b^2[/tex], find the value of [tex](9.8)^2[/tex].

Sagot :

To find the value of [tex]\( (9.8)^2 \)[/tex] using the identity [tex]\( (a - b)^2 = a^2 - 2ab + b^2 \)[/tex], let's follow a step-by-step approach.

First, identify the given values:
- [tex]\( a = 9.8 \)[/tex]
- [tex]\( b = 0 \)[/tex]

We can use the identity:

[tex]\[ (a - b)^2 = a^2 - 2ab + b^2 \][/tex]

Substitute [tex]\( a = 9.8 \)[/tex] and [tex]\( b = 0 \)[/tex] into the identity:

[tex]\[ (9.8 - 0)^2 = 9.8^2 - 2 \cdot 9.8 \cdot 0 + 0^2 \][/tex]

Simplifying each term individually:
1. Calculate [tex]\( 9.8^2 \)[/tex]:

[tex]\[ 9.8^2 = 96.04000000000002 \][/tex]

2. Calculate [tex]\( 2 \cdot 9.8 \cdot 0 \)[/tex]:

[tex]\[ 2 \cdot 9.8 \cdot 0 = 0.0 \][/tex]

3. Calculate [tex]\( 0^2 \)[/tex]:

[tex]\[ 0^2 = 0 \][/tex]

Now, sum the results obtained from each term:

[tex]\[ 9.8^2 - 2 \cdot 9.8 \cdot 0 + 0^2 = 96.04000000000002 - 0.0 + 0 \][/tex]

Combining all terms, we get:

[tex]\[ 96.04000000000002 \][/tex]

Thus, the value of [tex]\( (9.8)^2 \)[/tex] is:

[tex]\[ 96.04000000000002 \][/tex]