Question

solve the quadratic equation x2-100=0 using this formula method
b²-4ac
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Answer 1

$\Large{\boxed{\underline{\overline{\mathfrak{\star\:AnSwer\:\star}}}}}\\\\\tt{x^2\:-\:100\:=\:0}\\\\\tt{\pink{\star\:Formula}}\\\\\tt{x\:=\:{\dfrac{-b\:±\:\sqrt{b^2\:-\:4ac}}{2a}}}\\\\\tt{Put\:values\:in\:the\:given\:equation\:we\:get;}\\\\\tt{a\:=\:1}\\\tt{b\:=\:0}\\\tt{c\:=\:-100}\\\\\tt{x\:=\:-b\:{\dfrac{-0\:±\:\sqrt{0^2\:-\:4.1(-100)}}{2.1}}}\\\\\tt{x\:=\:{\dfrac{0\:±\:20}{2}}}\\\\\tt{x\:=\:{\dfrac{0\:+20}{2}}\:or\:{\dfrac{0\:-\:20}{2}}}\\\\\therefore\tt{x\:=\:10\:or\:-10}$