Question

Solve using the quadratic formula.

x² - 9x + 20 = 0

Answer 1

Use\[\LARGE{-b \pm \sqrt{b^2-4ac} \over 2a}\]

Answer 2

\[\begin{array}{*{20}c} {x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}} & {{\rm{when}}} & {ax^2 + bx + c = 0} \\ \end{array}\]

Answer 3

can you tell us what a b and c are?

Answer 4

Here a=1, b=-9, c=20.

Answer 5

\[a=1,b=-9,c=20\]Solution is\[x_{1,2}=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\]Just put your numbers in the formula and count.

Answer 6

b=9 c=20

Answer 7

@jeletta1 sorry b=-9

Answer 8

& wht about a

Answer 9

a=1

Answer 10

yes

Answer 11

Can u solve it now???