Question

1. Reduza a termos semelhantes. a) 10+ (4x - 30) = b) 5x2-8-( 6-8x) = c) 12y2 - (- y2 – 5y + 12) = d) 12x+(7x-5)-(20+4x)= AJUDA RÁPIDO "sem brincadeiras"​

Answer 1

Resposta:

a) 10+ (4x - 30)

$10 + 4x - 30 \\ - 20 + 4x$

b) 5x2-8-( 6-8x)

$5 {x}^{2} - 8 - 6 + 8x \\ 5 {x}^{2} + 8x - 14$

c) 12y2 - (- y2 – 5y + 12)

$12 {y}^{2} + {y}^{2} + 5y - 12 \\ 13 {y}^{2} + 5y - 12$

d) 12x+(7x-5)-(20+4x)

$12x + 7x - 5 - 20 - 4x \\ 15x - 25$