+0

# Help math

0
342
2

x2  + 13= 852

Mar 9, 2021

#1
+36457
+1

x^2 = 85^2 - 13 ^2

x ^2 = 7225 - 169

x2 = 7056

x = +- sqrt 7056 = +- 84        you probably want the + 84 answer

Mar 9, 2021
#2
+121
+1

$$x^2+13^2=85^2\quad :\quad x=84,\:x=-84$$

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Mar 10, 2021