Question

6(х+1)²-6х²=54 решите подробно

Answer 1

$6(x+1)^2-6x^2=54 6( x^{2} +1+2x)-6 x^{2} =54 6 x^{2} +6+12x-6 x^{2} =54 12x=54-6 12x=48 x=4$