1. Упростить выражение 1)-5x(2x2+3y-5)
2)2a(3b3+5b-8a)
3)-6x(-2x2y-2y-5x)
4)-8y(2x2+2y-3x)
5)3 (x+1)+(x+1)
6)(а-2)-2 (а-2)
7)3 (y+5)-2 (y-6)
8) 13 (6в-1) - 6(13в-1)
9)3x(x-2) - 5x(x+3)
10)2y(x-y) + у (3у-2х)

Question

Алгебра: 1. Упростить выражение 1)-5x(2x2+3y-5) 2)2a(3b3+5b-8a) 3)-6x(-2x2y-2y-5x) 4)-8y(2x2+2y-3x) 5)3 (x+1)+(x+1) 6)(а-2)-2 (а-2) 7)3 (y+5)-2 (y-6) 8) 13 (6в-1) - 6(13в-1) 9)3x(x-2) - 5x(x+3) 10)2y(x-y) + у (3у-2х)

Соняllik · Accepted Answer

1)12a²b³+3a³b²+16b²-a²=3a²b²(4b+a) + (4²b² - a²)=3a²b²(4b+a)+(4b-a)(4b+a)=

= (4b+a)(3a²b² + 4b- a)

2) 49c² -14c+1 -21ac+3a = (49c²-14c+1) -3a(7c - 1) = (7c - 1)² - 3a(7c - 1) =

=(7c-1)(7c - 1 - 3a)

3)ax²+ay²+x^4+2x²y²+y^4 = a(x²+y²)+(x^4+2x²y²+y^4) = a(x²+y²) +(x²+y²)²=

= (x²+y²) (a +x²+y²)

4) 27c³-d³+9c²+3cd+d² = [(3c)³-d³]+ (9c²+3cd+d²) =

=[(3c - d)(9c²+3cd+d²)] + (9c²+3cd+d²) = (9c²+3cd+d²) (3c-d+1)

5) b³-2b²-2b+1 =(b³ + 1) - 2b( b+1) = (b+1)(b² -b+1) - 2b(b+1) =

= (b+1)(b² -b+1-2b) = (b+1)(b² -3b+1)

1. Упростить выражение 1)-5x(2x2+3y-5) 2)2a(3b3+5b-8a) 3)-6x(-2x2y-2y-5x) 4)-8y(2x2+2y-3x) 5)3 (x+1)+(x+1) 6)(а-2)-2 (а-2) 7)3 (y+5)-2 (y-6) 8) 13 (6в-1) - 6(13в-1) 9)3x(x-2) - 5x(x+3) 10)2y(x-y) + у (3у-2х)

MOGZ ответил

1. Упростить выражение 1)-5x(2x2+3y-5)
2)2a(3b3+5b-8a)
3)-6x(-2x2y-2y-5x)
4)-8y(2x2+2y-3x)
5)3 (x+1)+(x+1)
6)(а-2)-2 (а-2)
7)3 (y+5)-2 (y-6)
8) 13 (6в-1) - 6(13в-1)
9)3x(x-2) - 5x(x+3)
10)2y(x-y) + у (3у-2х)