Selesaikanlah 1. 5(x-2y) = 2. -2(x+3y-1) = 3. 2a (3a-4) = 4. -a(-2a+5) = 5. (x+5) (x-4) = *dg cara dan penjelasannya yh

Question

Matematika Diposting : 2017-11-14 Diupdate : 2021-08-18 Rrkiw

Pertanyaan

Selesaikanlah
1. 5(x-2y) =
2. -2(x+3y-1) =
3. 2a (3a-4) =
4. -a(-2a+5) =
5. (x+5) (x-4) =

*dg cara dan penjelasannya yh

Answer 1

1.5x-3y
2.-2x(-5y)+3
3.-5a+5+=a

Answer 2

1) 5(x-2y) = 5x-10y

2) -2(x+3y-1) = -2x-6y+2

3) 2a(3a-4) = 6a²-8a

4) -a(-2a+5) = 2a²-5a

5) (x+5) (x-4) =

= x²-4x+5x-20
=x²+x-20