Question

A) x² + 4 = 0 b) x² + 5 = 0 c) x² – 10 = 2 x²

– x² – 9 = 0 e) 9 x² + 16 = 0 f) ( x + 5 )² = 10 x

g) h) ( x – 2 ) ( – x – 2 ) = 20 i) ( x – 8 )² = – 16 x

j) 3 ( 2 – 2 x ) = ( x – 4 ) ( x – 2 ) k) ( 2 x² – 1 )² = ( 1 + 2 x ) ( 1 – 2 x ) – 1

Answer 1

Respuesta:

a=

${x}^{2} = 0 - 4 \\ {x}^{2} = - 4 \\ {x} = - 4 \div 2 \\ x = - 2$