3 years ago

Can you help this this question 40 points

Mathematics

2 answers:

Levart [38]3 years ago

5 0

Answer:

1. Equation 1

2. -2x-3(6x-11)=-7

3. x=2

4. y=1

5. (2,1)

Scilla [17]3 years ago

4 0

Do you need this in a graph form?

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Musya8 [376]

Answer:

-10,10

Step-by-step explanation:

The given quadratic equation is

$k {x}^{2} + 20x + k = 0$

The discriminant of this equation is given by;

$D = {b}^{2} - 4ac$

where a=k, b=20, c=k

For rational solutions, the discriminant must be zero.

${20}^{2} - 4 \times k \times k = 0$

Simplify to get:

$400 - 4 {k}^{2} = 0$

This implies that:

$400 = 4 {k}^{2}$

$100 = {k}^{2}$

Take square root to get:

$k = \pm\sqrt{100}$

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