Question

1. Упростить выражение, 2 Разложить на множители

1. (5x+1)(5x-1);
7y2 x (-2y^5);
(y+1)(1-y)
5m^3-m+4m^2-m-m^2
2. 7y-xy;
a^2-100;
y-10y+25;
49+14k+k^2;

Answer 1

1. 25х2-1; -14у^7; у2-1; 5m^3-2m+3m^2.
2. y(7-x)

Answer 2

1)
(5x+1)(5x-1)=25x²-1
7y²(-2y⁵)=-14y⁷
(y+1)(1-y)=1-y²
5m³-m+4m²-m-m²=5m³+3m²-2m
2)
7y-xy=y(7-x)
a²-100=(a-10)(a+10)
y-10y+25=25-9y
49+14k+k²=(7+k)²=(7+k)(7+k)

Answer 3

Благодарю.

Answer 4

нзч