4. Expand and simplify the expression: (2 points)
x(4y + 2)
4xy + 2x
Ox(y + 2)
4xy + 6x
12xy + 3x

5. Expand and simplify the expression:
(2 points)
2 (3x - 1.2 + 4)
6x + 5.6
O 12x + 4.6
9x + 4.6
4x + 6.6
Can some one help me answer these two questions.

this is the answer

Step-by-step explanation:#4 the answer is 6x13y+8ox3y2+16ox3y+16x2y2+8x2y+3x  # 5  the answer is    5.6o12x+36x2+42.93x+6.6

■

a = 141°

b = 13°

c = 26°

■ Step-by-step explanation:

a = 128 + b

c = 2b

a + b + c = 128

replace a & c

(128 + b) + b + 2b = 180

4b = 180 - 128

4b = 52

b = 13°

a = 128° + 13° = 141°

c = 2×13° = 26°