Question

Fatore as equações
x2+10x+25=36

x2+40x+400=16

Answer 1

x²+10x+25=36

(x+5)²= 36

(x+5)= +6 => x'=1

(x+5)= -6 => x"= -11

x² +40x +400=16

(x+20)² = 16

(x+20) = +4 => x' = -16

(x+20) = -4 => x" = -24