Can anyone help in solving this problem? #14u^3-7u^3-8u+4#

#14u^3-7u^3-8u+4#

2 Answers
May 1, 2018

The answer is #14u^4-7u^3-8u+4#.

Explanation:

The answer cannot be simplified further because the variables have different exponents. It could be simplified if you were given a value for #u#.

May 1, 2018

#f(u) = (2u - 1)(sqrt7 - 2)(sqrt7 + 2)#

Explanation:

The equation most likely should be:
#f(u) = 14u^3 - 7u^2 - 8u + 4#
Factor by grouping -->
#f(u) = 7u^2(2u - 1) - 4(2u - 1)#
#f(u) = (2u - 1)(7u^2 - 4) = (2u - 1)(sqrt7u - 2)(sqrt7 + 2)#