Question

ayudaaa

8(2m + 3)² + 14(2m + 3) - 15 = 0

Answer 1

La respuesta por fórmula general es esta

Answer 2

Respuesta:

m = –9/8 ∨ m = –11/4

Explicación paso a paso:

8(2m + 3)²+14(2m + 3)-15 = 0

8(4m²+12m+9)+28m+42-15 = 0

32m²+96m+72+28m+27 = 0

32m²+96m+28m+72+27 = 0

32m²+124m+99 = 0

Factorizamos:

(8m+9)(4m+11) = 0

8m+9 = 0 ∨ 4m+11 = 0

8m = –9 ∨ 4m = –11

m = –9/8 ∨ m = –11/4