Find the roots for a quadratic equation xsquare +√2x - 12=0
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X =77
On squaring both sides you get 2x=144
On squaring both sides you get 2x=144
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x^2 + √2 x -12 = 0
=>x^2+ 3√2x-2√2x -12=0
=>x(x+3√2)-2√2(x+3√2)=0
=>(x+3√2)(x-2√2)=0
=>x= -3√2, 2√2
=>x^2+ 3√2x-2√2x -12=0
=>x(x+3√2)-2√2(x+3√2)=0
=>(x+3√2)(x-2√2)=0
=>x= -3√2, 2√2
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