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mr Goodwill [35]
3 years ago
14

Consider the quadratic function f(x) = 2x2 – 8x – 10. The x-component of the vertex is . The y-component of the vertex is . The

discriminant is b2 – 4ac = (–8)2 – (4)(2)(–10) = .
Mathematics
2 answers:
goldfiish [28.3K]3 years ago
7 0

Answer:

2

-18

144

Step-by-step explanation:

edge2020

Citrus2011 [14]3 years ago
4 0

Answer:

Part 1) The x-component of the vertex is 2 and the y-component of the vertex is -18

Part 2) The discriminant is 144

Step-by-step explanation:

we have

f(x)=2x^{2}-8x-10

step 1

Find the discriminant

The discriminant of a quadratic equation is equal to

D=b^{2}-4ac

in this problem we have

f(x)=2x^{2}-8x-10

so

a=2\\b=-8\\c=-10

substitute

D=(-8)^{2}-4(2)(-10)

D=64+80=144

The discriminant is greater than zero, therefore the quadratic equation has two real solutions

step 2

Find the vertex

Convert the quadratic equation into vertex form

f(x)+10=2x^{2}-8x

f(x)+10=2(x^{2}-4x)

f(x)+10+8=2(x^{2}-4x+4)

f(x)+18=2(x-2)^{2}

f(x)=2(x-2)^{2}-18 -----> equation in vertex form

The vertex is the point (2,-18)

therefore

The x-component of the vertex is 2

The y-component of the vertex is -18

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