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Mathematics 7 Online
OpenStudy (anonymous):

Evaluate: when x = -2 f(x) = -x^2 +x-2

OpenStudy (anonymous):

just substitute x=-2 in -x^2 +x-2

OpenStudy (anonymous):

can u?

OpenStudy (anonymous):

f(x) = 2^2 + -2 - 2

OpenStudy (anonymous):

f(x)=-(-2)^2-2-2

OpenStudy (anonymous):

Did u find your mistake?

OpenStudy (anonymous):

1st subs and square and then put - ve sign

OpenStudy (anonymous):

yeah i found it

OpenStudy (anonymous):

So, what did u get?

OpenStudy (anonymous):

6 ?

OpenStudy (anonymous):

Nope

OpenStudy (anonymous):

-8 ?

OpenStudy (anonymous):

Yep

OpenStudy (anonymous):

so f(x) = -8

OpenStudy (anonymous):

NOpe, f(-2)=-8

OpenStudy (anonymous):

then divide or leave alone?

OpenStudy (anonymous):

Thats it...... thats the answer

OpenStudy (anonymous):

okay thanks so much!

OpenStudy (anonymous):

Welcome

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