Tolong pake caranya…

1) A = B^t

4= 2a –> a= 2
2b = 2(2a+1) –> b = 2a +1 = 5
2c = 2(b+7) –> c = b+7 = 12

2) (2x-1)(x+2) – 2(x+2) = 0
2x² + 3x – 2 – 2x – 4 = 0
2x² + x – 6 = 0
x1+x2 = -b/a = -1/2

3) (a+2b) – 2 = 0 –> a + 2b = 2
2a+b – 1 = 0 –> 2a +b = 1
eliminasi
a+ 2b = 2
4a + 2b = 2
kurangkan
-3a = 0
a = 0

4. 

x = -2, y = 1

5) |-7…5||3…-2||

6) P = |-6..-5||5…4|