3+(2x+3)²=4(x-6)(6+x)срочно

Question

3+(2x+3)²=4(x-6)(6+x)







срочно

Answer 1

3+(2x+3)²=4(x-6)(6+x)<=>3+4х^2+12х+9=4(х^2-6^2)<=>4х^2+12х+12=4х^2-144<=>12х=-156<=>х=-13