Question 678627


I guess your x means multiplication sign...if so, next time use *.

{{{4d * d *d }}}...here you have to multiply {{{d}}} three times with itself and use exponent rule: when you are multiplying,and the bases are the same,you ADD the exponents
 
{{{d^1*d^1*d^1=d^(1+1+1)=d^3}}}

so, in you case we will have: {{{4d * d *d=4d^3 }}}