1) 9x²-4y²-3x+2yFactored: (3x-2y)(3x+2y)-3x+2y
2) 81-(3-8y)Simplified: 81-3+8y= 78+8y
3)36-(y+1)²Expanded: 36-y²-2y-1= 35-y²-2y
4)(4-5x)²-64Expanded: (4-5x)(4-5x)-64= 16-8x-8x+25x²-64= 25x²-16x-48
1) 9x²-4y²-3x+2y
Factored: (3x-2y)(3x+2y)-3x+2y
2) 81-(3-8y)
Simplified: 81-3+8y
= 78+8y
3)36-(y+1)²
Expanded: 36-y²-2y-1
= 35-y²-2y
4)(4-5x)²-64
Expanded: (4-5x)(4-5x)-64
= 16-8x-8x+25x²-64
= 25x²-16x-48