How do you evaluate #7m^{2}\times m^{2}#?

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Answer 1 · 2017-09-15T12:33:56

#7m^4#

#7m^2xxm^2 = 7m^2m^2#

This is one rule for exponents, #a^b*a^c=a^(b+c)#

So, we leave the #7# aside and we will focus on the #m^2m^2#

#m^2m^2=m^(2+2)=m^4#

#7+m^4=7m^4#

There's your answer. #7m^4#

If you were talking about something else like find #m#, you need to specify the #=...# as you need an answer in order to find #m#.