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anonymous
 4 years ago
Solve the quadratic equation 5x2  125 = 0. Show all your steps.
anonymous
 4 years ago
Solve the quadratic equation 5x2  125 = 0. Show all your steps.

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I know I do something like x^2  b = c

across
 4 years ago
Best ResponseYou've already chosen the best response.0\[\begin{align} 5x^2125&=0\\ 5x^2&=125\\ x^2&=25\\ x&=\pm5 \end{align}\]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0You just divided by 5?

merchandize
 4 years ago
Best ResponseYou've already chosen the best response.1To solve this by factoring you first must divide the eqn by 5. Then subtract the righthand result. Now you have the diff of 2 squares you should be able to factor it from there.

merchandize
 4 years ago
Best ResponseYou've already chosen the best response.1(x+5)(x5)=0 i.e x=+5,x=5

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Ohh right! Thank you!
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