Answer:
12x + 15 = 12x - 15
Step-by-step explanation:
-5x - 25 = 5x + 25
-25 = 10x + 25
-50 = 10x
-5 = x
12x + 15 = 12x - 15
15 = -15 ( No solution )
12x + 15 = 3(4x + 5)
12x + 15 = 12x + 15
12x = 12x
0 = 0 ( True for all x's )
7x + 21 = 21
7x = 0
x = 0
To solve this you first expand the brackets.
4x^2 - 20x + 25 = 49
Then make it equal 0.
4x^2 - 20x - 24 = 0
Now solve the quardratic.
x^2 - 5x - 6 = 0
(x - 6)(x + 1) = 0
x = 6 or x = -1
Answer: x= -22/5
Step-by-step explanation:
Answer: No mistakes was made
Step-by-step explanation:
Because It all equals the same as the answer