[tex]a)x( x - 3) = 0 \\ x = 0 \: \: \: \: x - 3 = 0 \\ \: \: \: \: \: \: \: \: x = 3[/tex]
[tex]b)(2x + 8)(x - 7) = 0 \\ 2x + 8 = 0 \: \: \: \: \: x - 7 = 0 \\ 2x = - 8 \: \: \: \: \: \: \: \: \: \: x = 7 \\ x = - \frac{8}{4} = - 2[/tex]
[tex]c)5 (x + 1 {)}^{2} = 0 \\ x + 1 = 0 \\ x = - 1[/tex]
[tex]d)2(x - 10 {)}^{2} = 0 \\ x - 10 = 0 \\ x = 10[/tex]
[tex]e) - 3 {x}^{2} = 0 \: \: \: \: \: | \div ( - 3) \\ {x}^{2} = 0 \\ x = 0[/tex]
[tex]f) {x}^{2} (4x - 1) = 0 \\ {x}^{2} = 0 \: \: \: \: \: \: \: \: 4x - 1 = 0 \\ x = 0 \: \: \: \: \: \: \: 4x = 1 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: x = \frac{1}{4} [/tex]
