Question

Алгебра 7класс даю все

Answer 1

$1)\ \ (x^3\cdot x)^3:Y=x^6\ \ \to \ \ (x^4)^3:Y=x^6\ \ ,\ \ x^{12}:Y=x^6\ \ ,\ \ Y=\dfrac{x^{12}}{x^6}=x^6\\\\\\2)\ \ (x^4)^3\cdot Y=x^{15}\ \ \to \ \ x^{12}\cdot Y=x^{15}\ \ ,\ \ Y=\dfrac{x^{15}}{x^{12}}=x^3\\\\\\3)\ \ (x^4)^3\cdot Y=-x^{15}\ \ ,\ \ x^{12}\cdot Y=-x^{15}\ \ ,\ \ Y=-\dfrac{x^{15}}{x^{12}}=-x^3\\\\\\4)\ \ (x^3\cdot x^2)^2=Y\cdot (-x)^3\ \ \to \ \ (x^5)^2=Y\cdot (-x^3)\ \ ,\ \ x^{10}=-Y\cdot x^3\ \ ,\\\\Y=-\dfrac{x^{10}}{x^3}=-x^7$