Question

find the roots of the equation -3x^2+243​

Answer 1

Answer:

$- 3 {x}^{2} + 243 = 0 \\ - 3 {x}^{2} = - 243 \\ {x}^{2} = 81 \\ x = 9 \: \: or - 9$

hence roots of the eqn is 9 or -9