Question

evaluate using identity {(a-b) (a+b) =a^2-b^2}1.05*9.5​

Answer 1

Answer:

Using the identity

1.05×9.5= (1+0.5) (9+0.5)

= 1²-(0.5)²

= 1 -0.25=0.75

Step-by-step explanation:

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Answer 2

Answer:  1.05 x 9.5 = 1.05 x 0.95 x 10

=(1 + 0.05) (1 - 0.05)

= [(1)² - (0.05)²] x 10

= [1 - 0.0025] x 10 [( a+ b) = a² - b²]

= 0.9975 x 10 = 9.975

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