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Mathematics 17 Online
OpenStudy (anonymous):

5(x-7)-4?? how ???? plsss,,

OpenStudy (marissalovescats):

Distributive property with 5(x-7)

OpenStudy (anonymous):

then..?

OpenStudy (marissalovescats):

Add like terms

OpenStudy (marissalovescats):

So what is 5(x-7)?

OpenStudy (anonymous):

5x-35 .. then?

OpenStudy (marissalovescats):

Good so now you have 5x-35-4 So the answer is?

OpenStudy (anonymous):

i dont know.. how ?

OpenStudy (marissalovescats):

-35-4 is what?

OpenStudy (anonymous):

31?

OpenStudy (marissalovescats):

Not quite. -35 -4

OpenStudy (marissalovescats):

-35-4 would be -39

OpenStudy (anonymous):

ahhh.. so?

OpenStudy (marissalovescats):

So that's the answer. 5x-39

OpenStudy (anonymous):

it has to be quadratic equation..

OpenStudy (marissalovescats):

How there's no squaring anything

OpenStudy (marissalovescats):

A quadratic equation is in the form of ax^2+bx+c

OpenStudy (anonymous):

this is the given : x(x-7)-4=0

OpenStudy (marissalovescats):

Okay well you put 7 lol

OpenStudy (marissalovescats):

So what's x(x-7)

OpenStudy (marissalovescats):

You have 5(x-7)-4 not x(x-7)-4

OpenStudy (anonymous):

x^2-7x?

OpenStudy (marissalovescats):

Good So x^2-7x-4

OpenStudy (anonymous):

so thats the answer?

OpenStudy (marissalovescats):

Yup unless they want you to find x values with the quadratic formula.

OpenStudy (anonymous):

oh thanks.. :)

OpenStudy (marissalovescats):

What does the question ask you to do?

geerky42 (geerky42):

You were given equation, not expression, so I'm sure question wants you to find the value of x.

geerky42 (geerky42):

you were given x(x-7)-4=0

OpenStudy (anonymous):

but... this i dont understand.. |dw:1403140501548:dw|

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