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ashleyb
 3 years ago
Solve. x^2 + x = 20
ashleyb
 3 years ago
Solve. x^2 + x = 20

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Izzy25
 3 years ago
Best ResponseYou've already chosen the best response.3okay so first you move 20 over the = sign

UnkleRhaukus
 3 years ago
Best ResponseYou've already chosen the best response.0\[x^2+x=20\] \[x^2+x20=0\] \[x=\frac{b\pm\sqrt{b^24ax}}{2a}\]

Izzy25
 3 years ago
Best ResponseYou've already chosen the best response.3so it becomes this: dw:1343183162557:dw

Izzy25
 3 years ago
Best ResponseYou've already chosen the best response.3and then like the guy did above you use the QUADRATIC FORMULAAA .. it's quite hectic i tell you... do you need help with that... i can walk you through it

ashleyb
 3 years ago
Best ResponseYou've already chosen the best response.0i tried that way already but my hw is asking me to find two x's

ashleyb
 3 years ago
Best ResponseYou've already chosen the best response.0oh..then i must of did something wrong

Izzy25
 3 years ago
Best ResponseYou've already chosen the best response.3so you don't know how to do it because the quadratic formula DOES give u 2 answers

UnkleRhaukus
 3 years ago
Best ResponseYou've already chosen the best response.0\[a=1,\qquad b=1,\qquad c=20\]

Izzy25
 3 years ago
Best ResponseYou've already chosen the best response.3still want me to walk you though it?

Izzy25
 3 years ago
Best ResponseYou've already chosen the best response.3or unkleR can help u that is...

ashleyb
 3 years ago
Best ResponseYou've already chosen the best response.0dw:1343183363230:dwwhen i did the quadraric formula i got

Izzy25
 3 years ago
Best ResponseYou've already chosen the best response.3okay so now just do it one by one... your looking at 2 equations!

Izzy25
 3 years ago
Best ResponseYou've already chosen the best response.3or you could leave it like that... idk what ur teacher likes best

ashleyb
 3 years ago
Best ResponseYou've already chosen the best response.0oh okay. i understand now. thx for ur help

.Sam.
 3 years ago
Best ResponseYou've already chosen the best response.0You can use sum of roots and product of roots, x^2(SOR)+(POR)=0 SOR=a+b=1 POR=ab=20 Simultaneous equations, a=5, b=4 Roots are x=5, x=4
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