Question

find the value of the following (-4+5)*21​

Answer 1

In the image

(ii) (4^-1 + 5^0)(2^3) = 10

=> And What's you're asking in your question is

(-4+5) * 21

= (1) * 21

= 21

Answer 2

Answer:

(4^(-1) +5^0)×2^3

= ( 1/4 +5^0)×2^3 [ Since, a^(-m)= 1/a^m]

= ( 1/4+1)×2^3 [ Since, a^0= 1]

= ((1+4)/4)×2^3

= (5/4)×8

= (5×2)

= 10

The answer of what you're asking is

(-4+5)×21= 21

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