Question

h) x2 - 10x = 0 i) x2 = 0 j) 6x2 + 7x = 0 k) 4x2 - 5x = 0 l) 7x2 + 4x =0 respostas

Answer 1

$x2 - 10x = 0 \\ 2x - 10x = 0 \\ - 8x = 0 \\ x = 0$

$x2 = 0 \\ 2x = 0 \\ x = 0$

$6x2 + 7x = 0 \\ 12x + 7x = 0 \\ 19x = 0 \\ x = 0$

$4x2 - 5x = 0 \\ 8x - 5x = 0 \\ 3x = 0 \\ x = 0$

$7x2 + 4x = 0 \\ 14x + 4x = 0 \\ 18x = 0 \\ x = 0$