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Mathematics 7 Online
zarkam21:

Help please

zarkam21:

1 attachment
Vocaloid:

for every quadratic equation in standard form: a is the coefficient of the x^2 term b is the coefficient of the x term c is the constant (the number not being multiplied to x) remember to include the negative sign in front if applicable

Vocaloid:

coefficient = the number multiplied to a variable

zarkam21:

so x^2

Vocaloid:

x^2 = 1 * x^2 making the coefficient (the number being multiplied to x^2) equal to...?

zarkam21:

1

Vocaloid:

good, so a = 1 apply the same logic to find b and c

zarkam21:

-6

Vocaloid:

b is the number being multiplied to x, which is...?

zarkam21:

-4

zarkam21:

and then for c is it 1

Vocaloid:

good, so a = 1 b = -4, c = 1 plug these into the quadratic equation

zarkam21:

1-4+1?

Vocaloid:

|dw:1515008907976:dw|

Vocaloid:

**it says - 4ac at the top

zarkam21:

4i/2

Vocaloid:

it shouldn't be imaginary, check your signs carefully

zarkam21:

4/2

Vocaloid:

|dw:1515009019369:dw|

Vocaloid:

^ simplify this

zarkam21:

4+2isqrt5

Vocaloid:

it should not have i in the final answer, check your arithmetic

zarkam21:

i don't know that is what i keep getting

Vocaloid:

|dw:1515009153930:dw|

zarkam21:

1 attachment
Vocaloid:

there was most likely a syntax error in what you typed, try doing it by hand

zarkam21:

still am getting the same?:/

Vocaloid:

simplify sqrt(12)

Vocaloid:

I tried mathway and I got the correct answer, can you show me your input?

Vocaloid:

1 attachment
zarkam21:

2sqrt3

zarkam21:

@Vocaloid

Vocaloid:

don't forget the +/- sign

Vocaloid:

2 +/- sqrt(3)

Vocaloid:

that's it for part II

zarkam21:

okay

zarkam21:

thanks

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