Question

уравнение срочно!!!
12-x²=3-x(x-4)

Answer 1

$12 - {x}^{2} - 3 + {x}^{2} - 4x = 0 \\ - 4x + 9 = 0 \\ - 4x = -9 \\ x = \frac{-9}{ - 4} = 2 \frac{1}{4} = 2.25$

Answer 2

12-x²=3-x(x-4)

12-х^2=3-x^2+4x

12=3+4x

-4x=3-12

-4x=-9

x=9/4

x=2.25