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3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

Mathematics

2 answers:

solong [7]3 years ago

6 0

$Use\\\\a^2-b^2=(a-b)(a+b)\\\\i=\sqrt{-1}\to i^2=-1\\\\x^2+50=x^2-(-1)(50)=x^2-50i^2=x^2-2\cdot25i^2\\\\=x^2-2\cdot5^2i^2=x^2-2(5i)^2\\\\=x^2-(\sqrt2)^2(5i)^2=x^2-(5i\sqrt2)^2\\\\=(x-5i\sqrt2)(x+5i\sqrt2)=(x-5\sqrt2i)(x+5\sqrt2i)$

algol [13]3 years ago

3 0

$x^2+50=\\\\x^2-(-50)=\\\\
(x-\sqrt{-50})(x+\sqrt{-50})=\\\\
(x-5i\sqrt2)(x+5i\sqrt2)$

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