Question

4x ao quadrado-16x -16x=0​

Answer 1

Resposta:

${4x}^{2} - 16x - 16x = 0 \\ {4x}^{2} - 32x = 0 \\ \\ {b}^{2} - 4ac = \\ {( - 32)}^{2} - 4 \times 4 \times 0 = \\ 1024 - 0 = \\ 1024 \\ \\ x = \frac{ - b + - \sqrt{1024} }{2a} = \frac{ - ( - 32) + - 32}{2 \times 4} = \frac{32 + - 32}{8} \\ \\ x = \frac{32 + 32}{8} = \frac{64}{8} = 8 \\ \\ x = \frac{32 - 32}{4} = \frac{0}{4} = 0$

x' = 8 x" = 0

s {0; 8}