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Aditi_SinghBest ResponseYou've already chosen the best response.0
\[5x^2 = 45x ?\] \[=> 5x = 45\] \[=> x = 9\]
 one year ago

HeroBest ResponseYou've already chosen the best response.0
No, you do not divide both sides by x. That is not the first step.
 one year ago

HeroBest ResponseYou've already chosen the best response.0
A Quadratic always has two solutions unless it is a perfect square.
 one year ago

HeroBest ResponseYou've already chosen the best response.0
\[ \\5x^2 = –45x \\5x^2 + 45x = 0 \\5x(x + 9) = 0 \\5x = 0 \\x + 9 = 0 \\x = 0 \\x = 9 \]
 one year ago

HeroBest ResponseYou've already chosen the best response.0
The rule is "Never divide by the variable you are trying to solve for".
 one year ago
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