solving by quadratic equation

[cobalt swift]

need help with this question

[ocean owl]

do you know the formula

like where to put the values and all

[ocean owl]

?

[cobalt swift]

yeah

its still saying incorrect

now theres a new version of it

[ocean owl]

ok

so how would you write it

[cobalt swift]

label the abc

• 8x +or- root 8^2 + (4x2x5) / 4

[ocean owl]

in the root why did you do 8^2 + 4ac?

[cobalt swift]

because thats in the formula

b^2 + 4ac

[ocean owl]

no it isnt

try to rewrite it now

and solve

[cobalt swift]

oh ok

ill try it

[cobalt swift]

so it should be

-0.77

and -3.22

how is it wrong

@ocean owl

[rocky mason]

i think the 3.22 is positive

[cobalt swift]

lemme check

[rocky mason]

try out 0.77 , 3.22

both in positive not negative

[cobalt swift]

if its wrong i get another version of the question

[rocky mason]

yo btw

please blur your name

i dont want someone to doxx themselves

@cobalt swift

[cobalt swift]

its gone

maybe its because when i rounded to 2 dp its -0.78

[rocky mason]

ye try that

try 0.78

i mean - 0.78

[cobalt swift]

nope it was wrong

new question now

can you try to solve it as well?

[lofty jacinth]

ok i solved

what did you get

[cobalt swift]

a syntax error

[lofty jacinth]

isn't it just the same format as this

put the 10 in parenthesis

[cobalt swift]

the 10x is -10x

[lofty jacinth]

because of pemdas i think it interprets it as - (10^2)

so - 100

[cobalt swift]

yeah

[crystal chasm]

@cobalt swift

you are in the uk?

[cobalt swift]

so should i just put -100

[lofty jacinth]

no

[cobalt swift]

yeah

[crystal chasm]

i have sparx math too haha

[lofty jacinth]

thats wrong

[cobalt swift]

look at the question

[crystal chasm]

you want me to solve for you

[lofty jacinth]

use this

[cobalt swift]

yes please

[cobalt swift]

i did

oh wait i see what you mean

a - x a - is a +

[crystal chasm]

x = 4.2

or

[cobalt swift]

so its just 10^2

[crystal chasm]

x = 0.8

x = 4.2 or 0.8

[cobalt swift]

you sure?

let me try

[crystal chasm]

yes

[lofty jacinth]

if you are going to give answers at least give them right

[crystal chasm]

also can you help me with this

[cobalt swift]

its to 2 dp

[crystal chasm]

oh 2 dp

4.16 or 0.84 then

@cobalt swift

[cobalt swift]

let me try this

[lofty jacinth]

plug in that p = 17m

and just solve the ratio

[crystal chasm]

im dumb bro

can you explain further

[cobalt swift]

I love you lad

that took way too long

[crystal chasm]

big up man

[cobalt swift]

havent learnt yet 💀

im year 9

[crystal chasm]

im in 10

its some dead bs thats not been done in class

[lofty jacinth]

so the ratio would be m : (17m - 4m)

[crystal chasm]

oh right

1:13

[crystal chasm]

thanks mate

[warm shadow]

@crystal chasm has given 1 rep to @lofty jacinth

[crystal chasm]

@cobalt swift do +close

[cobalt swift]

i closed it

+close