Question

(9.9)² using identity -2
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Answer 1

Answer:

$98.01$

Step-by-step explanation:

(9.9)²

(10 - 0.1)²

here we expand this by using the Formula of (a - b)² = a² - 2ab + b²

(10)² + (0.1)² - 2 × 10 × 0.1

100 + 0.01 - 2

98 + 0.01

98.01

Answer 2

Answer:

970.299

Step-by-step explanation:

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