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Write down the quadratic equation whose roots are x=-7 and x=-1, and the coefficient of x^2 is 1.

 

Enter your answer in the form "x^2 + bx + c = 0".

 Nov 9, 2021
 #1
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Write down the quadratic equation whose roots are x=-7 and x=-1, and the coefficient of x^2 is 1.

Enter your answer in the form "x^2 + bx + c = 0".  

 

 

Since the roots are               x = –7   and   x = –1     then

the associated factors are    (x + 7)   and   (x + 1)    respectively.  

 

which makes the equation     x2 + 8x + 7   

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 Nov 9, 2021
 #2
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x2 + 8x + 7 = 0    Without the = 0 it isn't an equation, it's just an expression. 

                           The expression has to equal something to be an equation. 

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Guest Nov 9, 2021

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