26-07-2021
Mathematics

contestada

c) Workout using factorization. Show all your working. 9.9²- 0.1²

Respuesta :

sadovnichenkoant sadovnichenkoant

26-07-2021

Answer:

98

Step-by-step explanation:

1) You shulduse the formula x^2-y^2= (x-y)(x+y)

That obvious, that 9.9 is considered as x, and 0.1 as y

2) So 9.9²- 0.1²= (9.9-0.1) * (9.9+0.1)=9.8*10=98

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