Basic Algebra question, expand one set of brackets, coefficients may be positive or negative, pronumerals randomised.
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\n\n$\\simplify{{pmult}({pxcoeff}{var1}+{pconstant}{var2})}$ means $\\var{pmult}\\times (\\simplify{{pxcoeff}{var1}+{pconstant}{var2}})$ which means $\\simplify[!collectNumbers]{{pmult}*{pxcoeff}{var1}+{pmult}}\\times \\var{pconstant}\\var{var2}$, and so expanding $\\simplify{{pmult}({pxcoeff}{var1}+{pconstant}{var2})}$ gives $\\simplify{{pmult}*{pxcoeff}{var1}+{pmult}*{pconstant}{var2}}$.
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\n$\\simplify{{pmult}({pxcoeff}{var1}+{pconstant}{var2})}$ means $\\var{pmult}\\times (\\simplify{{pxcoeff}{var1}+{pconstant}{var2}})$ which means $\\simplify[!collectNumbers]{{pmult}*{pxcoeff}{var1}+{pmult}}\\times \\var{pconstant}\\var{var2}$.
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