Question

1. Решите неполное квадратное уравнение: а) 6х-5х²=0 б) 4-x²=0​

Answer 1

$\displaystyle\bf\\1)\\\\6x-5x^{2} =0\\\\x\cdot(6-5x)=0\\\\\\\left\{\begin{array}{ccc}x=0\\6-5x=0\end{array}\right \ \ \Rightarrow \ \ \left\{\begin{array}{ccc}x=0\\-5x=-6\end{array}\right \ \ \Rightarrow \ \ \left\{\begin{array}{ccc}x_{1} =0\\x_{2} =1,2\end{array}\right\\\\\\Otvet \ : \ 0 \ ; \ 1,2\\\\2)\\\\4-x^{2} =0\\\\(2-x)\cdot(2+x)=0\\\\\\\left\{\begin{array}{ccc}2-x=0\\2+x=0\end{array}\right \ \ \Rightarrow \ \ \left\{\begin{array}{ccc}x_{1} =2\\x_{2} =-2\end{array}\right$

$\displaystyle\bf\\Otvet \ : \ 2 \ ; \ -2$