Question

What are the solution(s) of the quadratic equation 98 - x2 = 0?

O x = +277
O x = 15/3
O x = 1772
ESP
O
no real solution

Answer 1

±7sqrt(2) = x

Explanation:

98 - x^2 =0

Add x^2 to each side

98 -x^2 +x^2 = 0+x^2

98 = x^2

Take the square root of each side

±sqrt(98) = sqrt(x^2)

±sqrt(49*2) = x

±sqrt(49)*sqrt(2) = x

±7sqrt(2) = x