Question

(x-2)ao quadrado igual a 4-9x

Answer 1

( x - 2 ) 2 = 4 - 9x

x2 - 4x + 4 = 4 - 9x

x2 - 4x + 9x = 0

x2 + 5x = 0

x ( x + 5 ) = 0

x = 0

x +5 = 0

x = - 5

Answer 2

(x-2)²=4-9x

x²-2•x•2+2²=4-9x

x²-4x+4=4-9x

x²-4x+9x = 4-4

x²+5x = 0

x(x+5)=0

x=0 V x=-5

Dúvidas??Comente!!