What is r(remainder) when (4x3 + 2x2 – 18x + 38) ÷ (x – 3)

Question

anonymous · Answer

Do you know how to do long division of polynomials?  or synthetic division?  either of those two methods will give you the answer.

anonymous · Answer

i got 110

anonymous · Answer

lets see:
$$4(3)^3+2(3)^2-18(3)+38 = 110$$so yes you are correct :)

anonymous · Answer

What is the solution to the equation log4 x + log4 2 = 3 ?

do u know the answer to this?

anonymous · Answer

hmm, you can use the properties of logs to combine the two being added.  Use:$$\log_b(x)+\log_b(y)=\log_b(xy)$$

anonymous · Answer

That would give you:$$\log_4(2x)=3$$

anonymous · Answer

okay what did you get as an answer

anonymous · Answer

32 i believe, since:$$\log_4(2x)=3\Longrightarrow 4^3 = 2x\iff 64=2x\iff x = 32$$

anonymous · Answer

i got 32 also.

how about this?
If f(x) = 5x2 – 8x + 13 and g(x) = 6x – 5, what is f(x) + g(x)?