Question

is X the solution of the equation ?
x=-3
-3x^2=-27

Answer 1

well... dunno
so let's use the given "x"
the given "x" is x = -3

so \(\bf x=-3\qquad \qquad -3x^2=-27\\
\textit{let us use }x = -3\\ \quad \\
-3x^2=-27\implies -3(-3)^2=-27\implies -3\cdot 9= -27\)

what do you think? does the left-hand-side EQUALS the right-hand-side?