Question 821639
Zero is just another name for root
You are given:
{{{ x = -3 }}}
{{{ x = 1 }}}
Or, what is the same thing:
{{{ x + 3  = 0 }}}
{{{ x - 1 = 0 }}}
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Multiplying these:
{{{ ( x+3 )*( x-1 ) = 0 }}}
{{{ x^2 + 3x - x - 3 = 0 }}}
{{{ x^2 + 2x - 3 = 0 }}}
You are asked to sketch the function
{{{ f(x) = x^2 + 2x - 3 }}}
{{{ graph( 400, 400, -6, 6, -6, 10, x^2 + 2x - 3 ) }}}