SOLUTION: Please help me how to solve this quadratic equation.2×^2-98=0

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Question 1085624: Please help me how to solve this quadratic equation.2×^2-98=0
Found 2 solutions by ikleyn, rothauserc:
Answer by ikleyn(52780) About Me  (Show Source):
You can put this solution on YOUR website!
.
2x%5E2-98 = 0  --->

2x%5E2 = 98

x%5E2 = 98%2F2 = 49,

x = +/- sqrt%2849%29,

x = +/- 7.


Answer. There are two solutions: x = 7 and x = -7.

Solved.


Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
2×^2 - 98 = 0
:
add 98 to both sides of =
:
2x^2 = 98
:
divide both sides of = by 2
:
x^2 = 49
:
take square root of both sides of =
:
x = 7 or -7
: