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3 years ago

Solve for x.....................

Mathematics

1 answer:

polet [3.4K]3 years ago

6 0

Answer:

B x=3

Step-by-step explanation:

12x = 2x^2 +18

Divide by 2

12x/2 = 2x^2/2 +18/2

6x = x^2 +9

Subtract 6x from each side

6x-6x = x^2 -6x+9

0= x^2 -6x+9

Factor

What 2 numbers multiply to 9 and adds to -6

-3*-3 = 0

-3+-3 =-6

0= (x-3) (x-3)

Using the zero product property

x-3 =0 x-3 =0

x=3 x=3

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If the discriminant of a quadratic equation is equal to -8, which statement describes the roots?

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Keywords

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in this problem we have that

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Given:

$\overline{AB}\cong \overline {CD},\overline{BC}\cong \overline {DA}$

To prove:

$\Delta CDA\cong \Delta ABC$

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