Question

1. 2(x-3)(4-2x)=
2. 2(4x-5)-5x+7=
3. -5+4x(x-10)=
4.(2a-b)(2a+b)=
Bantu jawab yaaa
Poinnya 25 deh!

Answer 1

1 20x-4x²-24
2 3x-3
3 -5+4x²-40x
4 4a²-b²

Answer 2

1. 2(x-3)(4-2x)
  =2(4x-2x²-12+6x)
  =2(-2x²+10x-12)
  =-4x²+20x-24

2. 2(4x-5)-5x+7
  =8x-10-5x+7
  =3x-3

3. -5+4x(x-10)
  =-5+4x²-40x
  =4x²-40x-5

4. (2a-b)(2a+b)
  =4a²-b²