How do you solve #5x^2 - 245 = 0 #?

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How do you solve #5x^2 - 245 = 0 #?

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Answer 1 · 2016-02-25T03:39:40

#x=7# or #x=-7#

Explanation:

#5x^2 - 245 = 0#
#5x^2 - 245 + 245 = 0 + 245# to isolate the variable term (x)
#5x^2 = 245#
#(5x^2)/5 = 245/5# to isolate the #x^2#
#x^2 = 49#
#x = sqrt49# to eliminate the #x^2#
#x=7# or #x=-7# the square can be plus or minus

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How do you solve #5x^2 - 245 = 0 #?

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