Question

(-18x+24)²=(20x-22)²



ME AJUDEM POR FAVOR​

Answer 1

Resposta:

Explicação passo-a-passo:

(-18x+24)^2=920x-22)^2

(-18x)^2+2*18x*24+24^2=(20x)^2-2*20x*22+22^2

324x^2+36x*24+576=400x^2-40x*22+484

324x^2+864x+576=400x^2-880x+484

400x^2-324x^2-880x-864x+484-576=0

76x^2-1744x-92=0 /4

19x^2-436x-23=0

delta=b^2-4ac

delta=(-436)^2-4*19*(-230)

delta=190.096-76*(-23)

delta=190.096+1748

delta=191844

x=-b+/-raiz quadrada de delta/2a

x=436+/- raiz de 191844/2*19

x=436+/-438/38

x'=436-438/38=-2/38=-1/19

x'=436+438/38=874/38=437/19=23

v={-1/19;23}