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Mathematics 9 Online
OpenStudy (anonymous):

Factor: x^2-3x-10

OpenStudy (paki):

use quadratic formula...

OpenStudy (skullpatrol):

any ideas?

OpenStudy (skullpatrol):

$$\Huge x^2-3x-10=(x+r)(x+s)$$

OpenStudy (anonymous):

x+3 X+5

OpenStudy (skullpatrol):

nope, try FOIL on (x+3)(x+5) does it give you what you want?

OpenStudy (skullpatrol):

Do you know what FOIL means?

OpenStudy (anonymous):

no

OpenStudy (skullpatrol):

do you know the distributive property?

OpenStudy (anonymous):

mmm noo

OpenStudy (skullpatrol):

$$\Huge a(b+c)=ab+ac$$

OpenStudy (skullpatrol):

have you ever seen that^

OpenStudy (anonymous):

hmm i think so

OpenStudy (skullpatrol):

When two or more numbers are multiplied each of the numbers is a factor of the product, right?

OpenStudy (anonymous):

yes

OpenStudy (skullpatrol):

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