Question

calcule4x+(x+6)=8x×7x

Answer 1

Explicação passo-a-passo:

4x + (x + 6) = 8x . 7x

4x + x + 6 = 56x²

5x + 6 = 56x²

56x² - 5x - 6 = 0

Δ = 1369

x = (5 ± 37) / -10

x' = 42/-10

x' = -21/5

x" = -32/-10

x" = 16/5