Question 972943
The question is ambiguous:
Possibility 1:
{{{(x+4.2)x=26}}}
{{{x^2+4.2x=26}}}
{{{x^2+4.2x-26=0}}}*[invoke quadratic "x", 1, 4.2, -26 ]
In this case, x=3.41 or x=-7.61
.
Possibility 2:
{{{x+4.2x=26}}}
{{{5.2x=26}}}
{{{x=5}}}
In this case, x=5