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Tju [1.3M]
3 years ago
5

I would appreciate the help please!!

Mathematics
2 answers:
zhannawk [14.2K]3 years ago
8 0

Answer:

the x-intercepts are

3\ and\ 4

The vertex is the lowest point on the curve

Step-by-step explanation:

we know that

The equation of a vertical parabola in vertex form is equal to

y=a(x-h)^{2}+k

where

(h,k) is the vertex of the parabola

if a>0 -----> then the parabola open upward (vertex is a minimum)

if a -----> then the parabola open downward (vertex is a maximum)

In this problem we have

y=x^{2} -7x+12

a=1

so

the parabola open upward (vertex is a minimum)

Find the x-intercepts of the quadratic equation

Equate the equation to zero

x^{2} -7x+12=0

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

x^{2} -7x=-12

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

x^{2} -7x+12.25=-12+12.25

x^{2} -7x+12.25=0.25

Rewrite as perfect squares

(x-3.5)^{2}=0.25

square root both sides

(x-3.5)=(+/-)0.5

x=3.5(+/-)0.5

x=3.5+0.5=4

x=3.5-0.5=3

therefore

the x-intercepts are

3\ and\ 4

storchak [24]3 years ago
7 0
X² - 7x +12 = 0
(x-3)(x-4)=0
x= 3 or 4
since the leading coefficient is positive the parabola opens up and the vertex is a minimum
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