Question 198305
# 1 Correct


# 2 Correct


# 3 {{{b^19*b^0=b^(19+0)=b^19}}}. Simply add the exponents.


# 4 Correct if the expression is {{{root(7,19)}}}


# 5 If your answer is {{{a^3+t^3}}}, then you are correct.


# 6 If the problem is {{{(sqrt(u)-sqrt(v))/(sqrt(u)+sqrt(v))}}}, then the answer is {{{(u+v-2*sqrt(u*v))/(u-v)}}} which is what I'm assuming you have (it's hard to read). If that's what you have, then you have the right answer.



Good job, you only missed one problem.