Question

Poinnya banyak. Tolong cek pr dong.

DIGITAL HOMEWORK 1.1
ALGEBRAIC CALCULATIONS


1. Simplify :
a. 3(a+4b)
b. (3x)³

2. P=5 Q=3 R=6. Amount of P+Q+2R ?

3.Simplify :
a. 6ax + 7by -3ax + 4by
b. (2a² + 5) - (a² - 2a +3)
c. 3(x-1) + 5(7x+3)

ANSWER :

1. 3*a + 3*4b
= 3a + 12b

(3x)³ = 3³ x³
= 27 x³

2. P=5, Q=3, R=6. Final result of P+Q+2R !
= 5 + 3 + 2 * 6
= 8 + 12
= 20

3.
a. 6ax + 7by - 3ax - 4by
= 3ax + 3by

b. (2a²+5) - (a² - 2a + 3)
= 2a²+ 5 - a² + 2a - 3
= a² + 2 - 2a

c. 4 (x-1) + 5 (7x + 3)
4*x-4 + 35x + 15
4x - 4 + 35x + 15
39x - 19

Answer 1

Hm menurut aku sih yang C itu salah
harusnya :
4x-4+35x+15=
39x+11