3 years ago

What are the solutions of the equation (x−13)2=400?

Mathematics

1 answer:

Slav-nsk [51]3 years ago

7 0

Answer:

Step-by-step explanation:

$(x-13)^2=400\\\\ (x-13)^2=(\pm20)^2\\\\x-13=20\quad\vee\quad x-13=-20\\\\x=33\qquad\vee\qquad x=-7$

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