Question

quien me ayuda con estas porfa, si no saben no contesten.

Answer 1

Explicación paso a paso:

$({x}^{3} - {x}^{2} + 6) - (5 {x}^{2} - 4x + 6) = {x}^{3} - {x}^{2} + 6 - 5 {x}^{2} + 4x - 6 = {x}^{3} - 6 {x}^{2} + 4x \\ \\( {y}^{2} + 6 {y}^{3} - 8) - (2 {y}^{4} - 3 {y}^{2} + 6y) = 6 {y}^{3} + {y}^{2} - 8 - 2 {y}^{4} + 3 {y}^{2} - 6y = - 2 {y}^{4} + 6 {y}^{3} + 4 {y}^{2} - 6y \\ \\( {a}^{3} - 6a {b}^{2} + 9a) - (15 {a}^{2} b - 8a + 5) = {a}^{3} - 6a {b}^{2} + 9a - 15 {a}^{2} b + 8a - 5 = {a}^{3} - 15 {a}^{2} b - 6a {b}^{2} + 17a - 5 \\ \\ ({x}^{4 } + 9x {y}^{3} - 11 {y}^{4} ) - ( - 8 {x}^{3} y - 6 {x }^{2} {y}^{2} + 20 {y}^{4} ) = {x}^{4} + 8 {x}^{3} y + 6 {x }^{2} {y}^{2} + 9x {y}^{3} - 31 {y}^{4} \\ \\ (a + b + c - d) -( - a - b + c - d) = a + b + c - d + a + b - c + d = 2a + 2b \\ \\( ab + 2ac - 3cd - 5de) - ( - 4ac + 8ab - 5cd + 5de) = ab + 2ac - 3cd - 5de + 4ac - 8ab + 5cd - 5de = - 7ab + 6ac + 2cd - 10de \\ \\ ({x}^{3} - 9x + 6 {x}^{2} - 19) - ( - 11 {x}^{2} + 21x - 43 + 6 {x}^{2} ) = {x}^{3} - 9x + 6 {x}^{2} - 19 + 11 {x}^{2} - 21x + 43 - 6 {x}^{2} = {x}^{3} + 11 {x}^{2} - 30x + 24 \\ \\ ( {y}^{5} - 9 {y}^{3} + {6}^{2} - 31) - ( - 11 {y}^{4} + 31 {y}^{3} - 8 {y}^{2} - 19y) = {y}^{5} - 9 {y}^{3} + 36 - 31 + 11 {y}^{4} - 31 {y}^{3} + 8 {y}^{2} + 19y = {y}^{5} + 11 {y}^{4} - 40 {y}^{3} + 8 {y}^{2} + 19y + 5$