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san4es73 [151]
3 years ago
6

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

Mathematics
1 answer:
kifflom [539]3 years ago
8 0

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

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