What is the standard form of $y= (-2x-5)(-x-4)$ ?

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Answer 1 · 2016-02-09T04:32:38

Standard form is $y = a*x^2+b*x+c$

It is clearly observable that when right hand side is expanded, highest degree of $x$ is $a*x^2+b*x+c$

In fact this becomes $-2x*(-x-4)-5*(-x-4)$

i.e. $2x^2+8x+5x+20$

i.e. $2x^2+13x+20$

From this it is obvious that the standard form is $y=a*x^2+b*x+c$

What is the standard form of y= (-2x-5)(-x-4) y= (-2x-5)(-x-4) ?