Respuesta :

Step-by-step explanation:

9.9²

(10-0.1)²

= 10² -2 (10) (0.1) + 0.1²

= 100 -2 + 0.01

= 98.01

Hope it helps you

SalmonWorldTopper

Answer:

★ Solution :-

[tex]\sf \longmapsto 9.9^2[/tex]

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

Here,

  • a = 10
  • b = 0.1

[tex]\sf \longmapsto (10 - 0.1)^2 = 10^2 - 2(10)(0.1) + 0.1^2[/tex]

[tex]\sf \longmapsto 10^2 - 2(10)(0.1) + 0.1^2[/tex]

[tex]\sf \longmapsto 100 - 2 + 0.01[/tex]

[tex]\sf \longmapsto 98.01[/tex]

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