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chihiroasleaf
 one year ago
Best ResponseYou've already chosen the best response.0have you learned solving quadratic equations?

agent0smith
 one year ago
Best ResponseYou've already chosen the best response.0\[x+14=x^2+24x+144 \] subtract x from both sides, then subtract 14 from both sides \[0=x^2+24x+144  x  14\]\[0 = x^2+23x+130\] Do you know how to factor equations? Find two numbers that multiply to equal 30 and add to make 23

agent0smith
 one year ago
Best ResponseYou've already chosen the best response.0multiply to equal 130, sorry.

agent0smith
 one year ago
Best ResponseYou've already chosen the best response.010x13 = 130 and 10+13 = 23

agent0smith
 one year ago
Best ResponseYou've already chosen the best response.0You can find solutions from here: (x+13)(x+10) = 0 look familiar...?

chihiroasleaf
 one year ago
Best ResponseYou've already chosen the best response.0@AriPotta what's the topic you are studying now? exponents? to solve this problem, you should now how to solve quadratic equation..

agent0smith
 one year ago
Best ResponseYou've already chosen the best response.0You don't need the quadratic eqn though, you can factor it

agent0smith
 one year ago
Best ResponseYou've already chosen the best response.0"should i just substitute each choice into the equation?" you can do this, but if it wasn't a multiple choice question, you obviously wouldn't have that option.

agent0smith
 one year ago
Best ResponseYou've already chosen the best response.0If you've done radicals, then it seems like you'd have learned how to factor equations (not using the quadratic formula)

agent0smith
 one year ago
Best ResponseYou've already chosen the best response.0Well that's all you need to know to factor something like x^2 + 23x + 130... find two numbers that multiply to make 130 and add to make 23. eg x^2 + 11x + 10 two numbers that multiply to make 10 and add to make 11... 1x10 = 10 and 1+10 = 11. So x^2 + 11x + 10 = (x+10)(x+1)
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