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

agent0smith Group TitleBest 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
 one year ago

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

agent0smith Group TitleBest ResponseYou've already chosen the best response.0
10x13 = 130 and 10+13 = 23
 one year ago

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

chihiroasleaf Group TitleBest 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..
 one year ago

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

agent0smith Group TitleBest 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.
 one year ago

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

agent0smith Group TitleBest ResponseYou've already chosen the best response.0
Well 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)
 one year ago
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