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monitta
3 years ago
8

Factor completely and then place the factors in the proper location on the grid. x^2 - 5x - 14

Mathematics
2 answers:
Paraphin [41]3 years ago
8 0

Answer:

The factors are (x-7)  and  (x+2)

Step-by-step explanation:

we have

x^{2} -5x-14

To find the factors equate the equation to zero

x^{2} -5x-14=0

Group terms that contain the same variable, and move the constant to the opposite side of the equation

x^{2} -5x=14

Complete the square. Remember to balance the equation by adding the same constants to each side

x^{2} -5x+6.25=14+6.25

x^{2} -5x+6.25=20.25

Rewrite as perfect squares

(x-2.5)^{2}=20.25

(x-2.5)=(+/-)\sqrt{20.25}

(x-2.5)=(+/-)4.5

x=2.5(+/-)4.5

x=2.5+4.5=7

x=2.5-4.5=-2

therefore

x^{2} -5x-14=(x-7)(x+2)

using a graphing tool see the attached figure

The factors of the quadratic equation are the x-intercepts (values of x when the value of the function is equal to zero)

Bess [88]3 years ago
6 0
x^2 - 5x - 14=\\
x^2+2x-7x-14=\\
x(x+2)-7(x+2)=\\
(x-7)(x+2)
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