SOLUTION: I have the equation {{{ x^4-134x^2+1125=0 }}} and the answers {{{ -5sqrt(5) }}} , -3,3, and {{{ 5sqrt(5) }}} . My question is how did it simplified all the way down from {{{ x^4-13
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Quadratic Equations and Parabolas
-> SOLUTION: I have the equation {{{ x^4-134x^2+1125=0 }}} and the answers {{{ -5sqrt(5) }}} , -3,3, and {{{ 5sqrt(5) }}} . My question is how did it simplified all the way down from {{{ x^4-13
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Question 759763: I have the equation and the answers , -3,3, and . My question is how did it simplified all the way down from to x=-(-134)ħsqrt((-134)^2-4(1)(1125))÷2(1) to x=134ħsqrt(13456))÷2 to , -3,3, and ?? Answer by sachi(548) (Show Source):
You can put this solution on YOUR website! x^4-134x^2+1125=0
let us put x^2=y so the eqn converts to
y^2-134y+1125=0
or y^2-125y-9y+1125=0
or y(y-125)-9(y-125)=0
or (y-125)(y-9)=0
or y=125 or 9
or x^2=125 or 9
or x= sqrt(125) or sqrt9
or x={{ -5sqrt(5) }}} , -3,3, and
