Question

solve x^2+4x-4=0!!! Please help. Best answer gets the medal. Pleaseeee help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! choices
x equals the quantity of negative 2 plus or minus square root 16 all over 2
x equals negative 4 plus or minus square root 2
x equals negative 2 plus or minus 2 square root 2
x equals the quantity of 4 plus or minus square root 18 all over 2

Answer 1

What do you want to do, complete the square, factor, or quadratic formula?

Answer 2

quadratic form

Answer 3

formula

Answer 4

\[\huge {\color{blue} {x=\frac{-b ±\sqrt{b^2-4ac}}{2a}} }\]

Answer 5

\[\huge {\color{blue} {ax^2+bx+c=0} }\]

Answer 6

the right answer is x=-2+2sqrt2 but i need to know how to solve it

Answer 7

see my ax^2+bx.... ?

find your
a=?
b=?
c=?

plug them in.

Answer 8

i have no clue can you just show me how to solve it?? please

Answer 9

I'll give you an example, ready?

Answer 10

can you just show me how to solve this one please last Q of hw

Answer 11

OK.

Answer 12

looking at
\[\huge {\color{blue} {ax^2+bx+c=0} }\]
compare to
\[\huge {\color{red} {1} }\huge {\color{blue} {x^2+} }\huge {\color{red} {4} }\huge {\color{blue} {x} } \huge {\color{red } {-4} }=\huge {\color{blue} {0} }\]
see the coefficients in red?

Answer 13

So,
\[\huge {\color{green} {a=1} }\]\[\huge {\color{green } {b=4} }\]\[\huge {\color{green } {c=-4} }\]

Answer 14

I'll show fast.