dmarch03
contestada

Which of the following is a solution to the quadratic equation below?
X2 + 14x +45=0
O A. 4
O B. -9
O C. 15
O D. 59

Respuesta :

ferrybukantoro

Answer:

B. -9

Step-by-step explanation:

X² + 14x +45=0

(x+9)(x+5)=0

x = -9 or x = -5

x = -9 is the answer

wegnerkolmp2741o

Answer:

B. -9

Step-by-step explanation:

X^2 + 14x +45=0

Factor

What two numbers multiply to 45 and add to 14

5*9 = 45

5+9 = 14

(x+5)(x+9) = 0

Using the zero product property

x+5 =0  x+9=0

x+5-5 =0-5    x+9-9 = 0-9

x = -5            x=-9

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