Question 940865
{{{ ( x + 4 )*( x - 3 ) = x^2 + x - 12 }}}
Just treat the factors the same way as if they
were numbers
The base is {{{ x+4 }}}
The height is {{{ x-3 }}}
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You can check this by making a substitution
for {{{ x }}} that is greater than {{{ 4 }}}
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{{{ x = 9 }}}
{{{ A = x^2 + x - 12 }}}
{{{ A = 9^2 + 9 - 12 }}}
{{{ A = 78 }}}
base = {{{ x + 4 = 13 }}}
height = {{{ x - 3 = 6 }}}
{{{ 78 = 13*6 }}}
{{{ 78 = 78 }}}
OK