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What are the solutions to the quadratic equation 98-x2=0
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What are the solutions to the quadratic equation 98-x2=0

User Georged
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98-x^2=0\qquad\text{add}\ x^2\ \text{to both sides}\\\\98=x^2\to x^2=98\\\\x=\pm√(98)\\\\x=\pm√(49\cdot2)\\\\x=\pm√(49)\cdot\sqrt2\\\\\boxed{x=-7\sqrt2\ \vee\ x=7\sqrt2}

User Kamil Niski
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