[tex]KL= \sqrt{x} (3-(-2)x^{2} +(-4-2)x^{2} = \sqrt{x} 25+36 = \sqrt{x} 61\\\\LM=\sqrt{x} (4-3)x^{2} +(7-(-4)x^{2} =\sqrt{x} 1+121=\sqrt{x} 122\\\\KM=\sqrt{x} (-4-(-2)x^{2} +(7-2)x^{2} =\sqrt{x} 36+25=\sqrt{x} 61[/tex]
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[tex]KL= \sqrt{x} (3-(-2)x^{2} +(-4-2)x^{2} = \sqrt{x} 25+36 = \sqrt{x} 61\\\\LM=\sqrt{x} (4-3)x^{2} +(7-(-4)x^{2} =\sqrt{x} 1+121=\sqrt{x} 122\\\\KM=\sqrt{x} (-4-(-2)x^{2} +(7-2)x^{2} =\sqrt{x} 36+25=\sqrt{x} 61[/tex]
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