Задача Задача №3697898
А
А
\(x^2-7x+10=(x-5)(x-2)\).
\(3x^2+3x-6=3(x+2)(x-1)\).
\(\dfrac{4b+12}{b^2-9}=\dfrac{4(b+3)}{(b-3)(b+3)}=\dfrac4{b-3}\), \(b\ne\pm3\).
\(\dfrac{b^2+b-6}{7b+21}=\dfrac{(b+3)(b-2)}{7(b+3)}=\dfrac{b-2}{7}\), \(b\ne-3\).
\(x^2-7x+10=(x-5)(x-2)\).
\(3x^2+3x-6=3(x+2)(x-1)\).
\(\dfrac{4b+12}{b^2-9}=\dfrac{4(b+3)}{(b-3)(b+3)}=\dfrac4{b-3}\), \(b\ne\pm3\).
\(\dfrac{b^2+b-6}{7b+21}=\dfrac{(b+3)(b-2)}{7(b+3)}=\dfrac{b-2}{7}\), \(b\ne-3\).
