⚠ Switch to EXCALIDRAW VIEW in the MORE OPTIONS menu of this document. ⚠
Text Elements
Solve equation x^2=25 x^2-25=0 (x-5)(x+5)=0 x=5, x=-5
x = +-5 {+-5}
for any real number if x^2=k then x = +-sqrt(k) x^2=25 x=+-sqrt(25) x=+-5
x^2=17 x=+-sqrt(17)
y^2=50 y=+-sqrt(50) y=+-5sqrt(2)
z^2+3=0 z^2=-3 z=+-sqrt(-3) z=+-isqrt(3)
2w^2+98=0 2w^2=-98 w^2=-49 w = +-7i