We have to find the value of the expression:
( x - y )² ; when x = 5 and y = - 1.
( 5 - ( - 1 ) )² = ( 5 + 1 )² = 6² = 36
Answer: the value is 36.
Answer:
4x (2x^2-7x-1)
Step-by-step explanation:
We must solve for x. Let's simplify this equation by dividing both sides by 6:
|2x-14|=7, which is the same as 2|x-7|=7.
First, assume that x-7 is already positive, so that we don't need the absolute value operator. Then x-7=7/2. Adding 7 to both sides results in x = 21/2.
Next, find the other solution:
Assume that x-7 is negative. Then |x-7|=-(x-7). Then -(x-7) = 7,
and -x + 7 = 7. Thus, x = 0.
The solution set is {0, 21/2}.
