Question

GALERA preciso PRA hj​

Answer 1

Resposta:

${x}^{2} - { x}^{2} + 100 = 2 {x}^{2} + 100 \\ {x}^{2} = \frac{100}{2} \\ {x}^{2} = 50 \\ x = \sqrt{50}$

b)

$16 - {x}^{2} - 2x \\ - {x}^{2} - 2x + 16( - 1) \\ {x}^{2} + 2x - 16$