Question

Допоможіть будь ласка!!!
Розв'яжіть рівняння
1) 4x²-12x
= 0;
2) x(x-2) + 5(x-2) = 0;

Answer 1

$\displaystyle\bf\\1)\\\\4x^{2} -12x=0 \ |:4\\\\x^{2} -3x=0\\\\x(x-3)=0\\\\\\\left[\begin{array}{ccc}x=0\\x-3=0\end{array}\right\\\\\\\left[\begin{array}{ccc}x_{1}=0 \\x_{2} =3\end{array}\right\\\\\\Otvet \ : \ 0 \ ; \ 3\\\\\\2)\\\\x(x-2)+5(x-2)=0\\\\(x-2)(x+5)=0\\\\\\\left[\begin{array}{ccc}x-2=0\\x+5=0\end{array}\right\\\\\\\left[\begin{array}{ccc}x_{1}=2 \\x_{2} =-5\end{array}\right\\\\\\Otvet \ : \ 2 \ ; \ -5$