naseerusmandanjuma naseerusmandanjuma

08-10-2020
Mathematics

contestada

evaluate (101.5)²-(100.5)²

Respuesta :

LammettHash LammettHash

08-10-2020

You can exploit the difference-of-squares identity,

a² - b² = (a - b) (a + b)

Then

101.5² - 100.5² = (101.5 - 100.5) * (101.5 + 100.5)

101.5² - 100.5² = 1 * 202

101.5² - 100.5² = 202

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