Question

subtract (7x³+7xy-6y²)-(3x³+5xy-4y²)​

Answer 1

Answer:

$2(2 {x}^{3 } + xy - {y}^{2} )$

Step-by-step explanation:

Given

$(7x {}^{3} + 7xy - 6 {y}^{2} ) - (3 {x}^{3} + 5xy - 4 {y}^{2} )$

subtracting

$(3 {x}^{3} + 5xy - 4 {y}^{2})$

from

$(7 {x}^{3} + 7xy - 6 {y}^{2} )$

we get

$(7 {x}^{3} + 7xy - 6 {y}^{2} - 3 {x}^{3 } - 5xy + 4 {y}^{2} ) \\ = 4 {x}^{3} + 2xy - 2 {y}^{2} \\ = 2(2 {x}^{3} + xy - {y}^{2} )$