Question

Resolva as equações. A) x2-90=31 B)5x2+4=49
C) 4x2-27=x2 D)2x2+11=x2+12 E)5(x2-1)=4(x2+1) F)x(x+2)=2x+25

Answer 1

$\: \: \: \: \: \: \: \: a \\{x}^{2} = + 90 + 31 \\ {x}^{2} = 121$