Question

Which of the following are the roots of x^2 + 13x + 36 = 0? *

4 and 9
-4 and -9
-4 and 9
4 and -9

Answer 1

Answer:

-4 and -9 are the roots for this equation

Answer 2

Answer:

-4 and -9

Step-by-step explanation:

x^2+13x+36

=x^2+4x+9x+36

=X(x+4)+9(x+4)

(x+9) (x+4)=0

(X+9)=0

X= -9

OR

(X+4)=0

X= -4

hence two of its zeros are -4 and -9

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