1. Sederhanakan: a.-3(a-2) b.-4(t+17) 2.Sederhanakan: a.4b3(2b2-2b) b.3xy(x+y) 3. Sederhanakan: a.1/4 x2(8x5-4) b.4/3 a2b(6a-5b) 4.Sederhanakan: a.(2a+4)(3a-5)

1. a. -3a+6
b. -4t-68

2. a. 8b⁵-8b⁴
b. 3x²y+3xy²

3. a. 1/4x²(8x⁵-4)
= (1/4x².8x⁵) (1/4x².(-4))
= 2x⁷-x²
b. 4/3a²b(6a-5b)
= (4/3a²b.6a) (4/3a²b.(-5b))
= 8a³b-20/3a²b²

4. a. (2a+4)(3a-5)
= 6a²-10a+12a-20
= 6a²+2a-20
b. (2b-1)(3b+4)
= 6b²+8b-3b-4
= 6b²+5b-4

5. a. (x+5)²
= (x+5)(x+5)
= x²+5x+5x+25
= x²+10x+25
b. (x-2y)²
= (x-2y)(x-2y)
= x²-2xy-2xy-4y²
= x²-4xy-4y²