Question

решите уравнение x(x-4)+(3-x)(3+x=-6​

Answer 1

${x}^{2} - 4x + 9 - {x}^{2} = - 6 \\ - 4x = - 15 \\ x = 3.75$

Answer 2

х(х-4)+(3-х)(3+х)=-6
${x}^{2} - 4x + 9 - {x}^{2} = - 6 \\ - 4x = - 6 - 9 = \\ - 4x = - 15 \\ x = \frac{15}{4} = 3\frac{3}{4}$