Question

Write the quadratic equation whose roots are -3 and -4, and whose leading coefficient is 1.

(Use the letter x to represent the variable.)

Answer 1

If the roots are say, 1 and -5, we would have to FOIL (x-1) (x+5)
Notice how it's x MINUS 1 ... and x PLUS 5... cuz if we let x = 1, then (1-1)=0.
Now foil out the expression and that's it. :)

Answer 2

Leading coefficient = "the coefficient of the x^2 term".

Answer 3

x^2 + 7x + 12

Answer 4

x^2 - 7x + 12

Answer 5

thanks guys i forgot the formula! that helps out alot