The fastest way is to just use a scientific calculator.
To do it without a calculator, use prime factorization.
I'll only do the second one which is the answer.
27 x 8
= 3^3 x 2^3 = 6^3
Which is a perfect cube.
I'm assuming that you meant 4x+1=3x?
Subtracting 4x, we get 1=-x. Multiplying by -1, we get x=-1 as the solution.
Answer:
B. 2x2y(x – 3y)(x + 3y)
Step-by-step explanation:

Answer:
i think it is 1.5
Step-by-step explanation
because 5 tenths is equal .5 and adding 1 unit which is adding on one which should equal 1.5