Question

Escreva as equacoes do 2 graus na forma reduzida.
a) 5-11$x^{2}$= -8x
b)4 + 3x= -$x^{2}$+2
c)x(x+2)= -5
d)(2x-1)²=1
obs' explicar pois tenho prova quarta feira obg

Answer 1

a) 5-11= -8x  ⇔-11x²+8x+5=0
b)4 + 3x= -+2⇔ x²+3x+2=0
c)x(x+2)= -5 ⇔x²+2x+5=0
d)(2x-1)²=1⇔2x²+4x+1-1=0⇔4x²+4x=0⇔ 4x(x+1)