How do you evaluate #\frac { 10^ { 2} - 2\times 3^ { 3} - 4} { 2\times 5+ 8\times 2^ { 2} }#?

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Answer 1 · 2017-02-25T12:05:07

#25/21#

The numerator and denominator need to be simplified.
Identify the separate terms first.

#((10^2) -(2 xx3^3)-(4))/((2xx5)+(8xx2^2))#

# = (100-54 -4)/(10+32)#

Notice that you may not cancel because there are + and - signs. Only factors can be cancelled.

#50/42" "larr# simplify

#(50 div2)/(42 div 2)#

#25/21#