Question 150345
We start with the formula, {{{Ap=base*height}}} -----> basic eqn.
{{{100squnits=x*(x+15)}}}
{{{100=x^2+15x}}}
{{{x^2+15x-100=0}}}
{{{(x+20)(x-5)=0}}}
2 values:
{{{x=-20}}} ----------> don't use, "negative"
{{{x=5}}} ------------> the one to used = height
{{{x+15=5+15=20}}} ---> = base
Go back basic eqn to check,
{{{100=5*20}}}
{{{100square units=100 square units}}}
Thank you,
Jojo