Question

Factor using U substitution

24x − 58x1/2 − 42

Answer 1

i am going to bet that this means
\[24x-25x^{\frac{1}{2}}-42\] so put
\[u=x^{\frac{1}{2}}\] and factor
\[u^2-58u-42\]

Answer 2

well there are two typos above, it should be factor
\[24u^2-58u-42\] and you get
\[2(u-3)(12u +7)\] and now replace u by
\[x^{\frac{1}{2}}\] to get your answer