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1) 2x – 3 (2x + 4)
= –
2) 8x – 5 (x + 5)
= –
3) 4 (x – 5) – 6
= –
4) 5 (3x – 2y)+ 8y
= –
5) 6x – 3(2x – 1)
=
6) 5y – 3y (y +2)
= –
7) 7y (y + 4) + y2 + 2
= + +
8) 3 (y – 4) + 2(4 – y)
= –
9) 6 (x +3) – 4 (x – 1)
= +
10) 5 (y – 8)- 4(y -7)
= –