Solve the equations A. 2x(x-2)=2x(x+2) B. 3×/5 -4x/20=2

Question

Matematika Diposting : 2017-08-31 Diupdate : 2023-11-27 noventaryjhazzmine

Pertanyaan

Solve the equations
A. 2x(x-2)=2x(x+2)
B. 3×/5 -4x/20=2

Answer 1

a. 2x(x-2)=2x(x+2)
2x²-4x=2x²+4x
-8x=0
x=0

b. 3x/5 - 4x/20=2 (x 20)
4(3x) - 4x = 40
12x-4x=40
8x=40
x=40/8
x=5

Answer 2

A. 2x(x-2)=2x(x+2)
2x^2-4x=2x^2+4x
2x^2-2x^2-4x-4x=0
-8x=0
x=0/-8
x=0

B. 3×/5 -4x/20=2
(3/5)×(-4x/20)=2
-12x/100=2
-12x=200
x=-16,7