Question

multiply 2m²-3m-1 and 4m²-m-1

Answer 1

ANSWER:

$8 {m}^{4} - 14 {m}^{3} - 3 {m}^{2} + 4m + 1$

EXPLANATION:

$(2m^{2} - 3m - 1)(4 {m}^{2} - m - 1)$

$= 2m^{2}(4 {m}^{2} - m - 1) - 3m(4 {m}^{2} - m - 1) - 1 (4 {m}^{2} - m - 1)$

$= (8 {m}^{4} - 2m^{3} - 2 {m}^{2}) - (12 {m}^{3} - 3 {m}^{2} - 3m) - (4 {m}^{2} - m - 1)$

$= 8 {m}^{4} - 2m^{3} - 2 {m}^{2}- 12 {m}^{3} + 3 {m}^{2} + 3m - 4 {m}^{2} + m + 1$

$= 8 {m}^{4} - 2 {m}^{3} - 12 {m}^{3} - 2 {m}^{2} + 3 {m}^{2} - 4 {m}^{2} + 3m + m + 1$

$= 8 {m}^{4} - 14 {m}^{3} - 3 {m}^{2} + 4m + 1$

I hope it helps you. Please mark me as BRAINLIEST if you like.