Get factored form

Write down: a=1, b=6, c=-13

Make it equal 0 by subtracting 3 on each side

Type it all in a calculator.

-7 and -18

9 and 2

9 and -2

2 and 7

This is the speed of light formula.

This is the quadratic formula.

This is the zero product property.

This is scary.

-10 & -4

-4 & 10

-8 & 4

8 & -4

± 4

± 8

4

8

± 5

± 10

± √10

-10

-4

16

4

8

Set the equation equal to zero

Divide 10 by 2 and add the result to both sides

Add a² and 10a together

Subtract the 21

x = -2 ± √3

x = -3 ± √2

x = 2 ± √3

x = 2 ± √2