упрастите ( 4 x^2 - 23 z^2 - 0.5 y ) + ( 3.3 y - 50 z^2 - 12xz^3 ) - id2071866720220610 от MiYaG11 10.06.2022 07:11

Question

Алгебра: упрастите ( 4 x^2 - 23 z^2 - 0.5 y ) + ( 3.3 y - 50 z^2 - 12xz^3 )

MiYaG11 · 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)

упрастите ( 4 x^2 - 23 z^2 - 0.5 y ) + ( 3.3 y - 50 z^2 - 12xz^3 )

MOGZ ответил

упрастите
( 4 x^2 - 23 z^2 - 0.5 y ) + ( 3.3 y - 50 z^2 - 12xz^3 )