SOLUTION: How do I solve (2x + 3)^3 - 64

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: How do I solve (2x + 3)^3 - 64       Log On


   

Question 132281: How do I solve (2x + 3)^3 - 64

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
%282x+%2B+3%29%5E3+-+64
This can't be "solved" because it's not an equation
If the minus sign is supposed to be an equals sign,
Then,
%282x+%2B+3%29%5E3+=+64
%282x+%2B+3%29%5E3+=+4%5E3
2x+%2B+3+=+4
2x+=+1
x+=+1%2F2
check:
%282x+%2B+3%29%5E3+=+64
%282%2A%281%2F2%29+%2B+3%29%5E3+=+64
%281+%2B+3%29%5E3+=+64
64+=+64
OK