Answer:
the second one, ((6 x 5) x 4) +((5 x 4) x 2) = 160
the third one, ((7 x 6) x 4) + (6 x 4) x 2) = 216
the fourth one, ((8 x 4) x 4) + ((4 x 3) x 2) = 152
Step-by-step explanation:
2. x=5.7
4. AC=7
steps :
12f + 49g
12f -7g(-7)
1.22
the root is -2 , 0